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.
[[40, -40, -148, -172], [-116, -46, 92, -51, -20], [-161, -93, 46, -56], [3, -153, 79, -38, 62, -57]]