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.
[[90, -119, -109], [-43, -4, -156, -53], [-76, -171, 18, -56, -146]]