Weare asked to solve for "x" in the following proportion:
6 / 7 = x / 106
so, in order to isolate x completely on one side, we multiply both sides by 106, that way cancelling the denominator that accompanies x:
106 * 6 / 7 = x
Then, x = 636 / 7
now performing the division:
x = 90.8571...
and we round this to the hundredth as requested:
x = 90.86