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.
[[-59, -69, -103, -115], [-110, 77, 55, 76, 78, 58, 40], [25, -90, -121], [-23, 81, 48, -18, 8, 94, 30], [-38, 78, 31, -125, -16, -129, 91]]