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.
[[-137, -141, -39, -60], [-150, -104, -183], [78, -50, -51, 15], [-71, -165, -77, 44, -112]]