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.
[[-172, -163, -121, -186, -44, -131], [-92, 44, -114, -128, -112, -56], [71, 47, 87, 59, -58], [60, 79, -156, -17, -69, 18, -90], [-147, 50]]