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.
[[-85, 10, -97, -91], [36, 71, -33, 43, -135], [35, -30, -8], [-104, 25, 78, 42]]