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.
[[-35, 7, -22, -22, 98, -152], [-101, -17, -115, 37, -2, 44], [-45, 47, -2, 10, -89, 20, -142], [54, 4, -105, -140, 90, -46]]