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.
[[-103, -73, 47, 78, 90], [-32, -98, -47], [-190, 48, -156, 75, 68], [13, -23], [-41, -90, -164, 50, -64, 23]]