  We consider the published distance moduli to the Fornax and Coma galaxy
clusters, with emphasis on the period since 1990. We have carefully homogenized
our catalogs of distance moduli onto the distance scale established in the
previous papers in this series. We assessed systematic differences associated
with the use of specific tracers, and discarded results based on application of
the Tully--Fisher relation and of globular cluster and planetary nebula
luminosity functions. We recommend `best' weighted relative distance moduli for
the Fornax and Coma clusters with respect to the Virgo cluster of $\Delta
(m-M)_0^{\rm Fornax - Virgo} = 0.18 \pm 0.28 $ mag and $\Delta (m-M)_0^{\rm
Coma - Virgo} = 3.75 \pm 0.23$ mag. The set of weighted mean distance moduli
(distances) we derived as most representative of the clusters' distances is,
\begin{eqnarray} (m-M)_0^{\rm Fornax} &=& 31.41 \pm 0.15 \mbox{ mag } (D =
19.1^{+1.4}_{-1.2} \mbox{ Mpc) and} \nonumber
  &=& 31.21 \pm 0.28 \mbox{ mag } (D = 17.5^{+2.4}_{-2.2} \mbox{ Mpc)};
\nonumber \\ (m-M)_0^{\rm Coma} &=& 34.99 \pm 0.38 \mbox{ mag } (D =
99.5^{+19.0}_{-15.9} \mbox{ Mpc) and} \nonumber
  &=& 34.78 \pm 0.27 \mbox{ mag } (D = 90.4^{+11.9}_{-10.6} \mbox{ Mpc)},
\nonumber \end{eqnarray} where the first value for each cluster is the result
of our analysis of the direct distance moduli, while the second modulus is
based on distance moduli relative to the Virgo cluster. The absolute and
relative distance moduli for both clusters are mutually consistent within the
uncertainties; the relative distance moduli yield shorter distances by
$\sim$1$\sigma$. Lingering uncertainties in the underlying absolute distance
scale appear to have given rise to a systematic uncertainty on the order of
0.20 mag.
