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.
[[-117, -193, 58, -95, 11, -92], [-72, 88, 67], [-39, 98, 33, 54, -121, -40, 92], [-138, 88, -49, -42, -30, -45]]