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.
[[-10, -109, -172, 31, 65], [-136, -120, 81, -181], [35, -13, -93, 51, 73, -171]]