This paper is a continuation of two previous papers in MSJ Memoirs, Vol.\,29
(Math. Soc. Japan, 2013) with the same title and numbered as I and II. Based on
the hereditary property given there, from mother groups G(m,1,n), the
generalized symmetric groups, to child groups G(m,p,n), the complex
reflection groups, we study in detail classification and construction of
irreducible projective representations (= spin representations) and their
characters of G(m,1,n) for n finite. Then, taking limits as n tends to
infinity, we obtain spin characters of the inductive limit groups
G(m,1,∞). By the heredity studied further, this gives the main kernel of
the results for G(m,p,∞) with p∣m,p>1.Comment: 88 pages, typos corrected, references correcte