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.
[[-123, -121, -70, -196, -136, -154], [-58, -36, 69], [-42, -94, -15, -59]]