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.
[[21, 71, 37, 10, -198, 94], [-138, 5, -90], [-43, -48, -145, -74, 33, -65, 28], [-132, -105, -148, -168, 78, -46]]