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.
[[-20, 75, 87, 24, 49, 99, 86], [81, 30], [-67, -51, -172, -167, -146, 92], [-38, 1, -167, 99, -38]]