In this task, you are given a list. This list contains many lists of integers. The list is several items written within a []. Your task is to find the maximum number among the members of each inner list. The output should be a list comprised of the maximums with the same order as the internal lists.
[[-85, 69, -45, -176, -54, 92], [-172, 77, 72, -163, -129, 90, 91], [-23, -109, -25, 51, -20, 21], [-122, 20, -172, -105, 53, 95, 47]]