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Honestly, I’m not sure if you’re trolling at this point – your questions are a matter of working through the algebraic calculations. Anyways in the spirit of good community spirit:
85.503075 = 127.015881 / [(1 + r)]^4
[(1 + r)]^4 = 127.015881 / 85.503075
[(1 + r)]^4 = 1.48551243332
(1 + r) = (1.48551243332)^(1/4)
(1 + r) = (1.48551243332)^(1/4)
1 + r = 1.104
r = 1.104 – 1
r = 0.104