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.
[[-5, -181], [89, 8, -57, 86, -37, 58, -192], [-65, -156, -136, -58, 31], [18, 11, -40, -122]]