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.
[[-123, 95, -71, 48], [-122, -9, -89], [-41, -128], [55, -51, -172, -36, -76, 75, 33], [96, -84, -192, -172, 59, 67], [-39, -152, 19, 15]]