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.
[[-89, -2, -160, 51, -194, -93], [-18, -123, -168, -55], [-41, -50, -13, -127, 57], [-30, -90, 99, 5, 31]]