While official support is lacking, the PC modding community has stepped up. If you are searching for online, you are likely looking for the fan-made translation patch.
El Presidente leaned back, a slow grin spreading across his face. "A language barrier? In Tropico? Impossible. I am a man of the world! I have 'borrowed' the Eiffel Tower and the Statue of Liberty. We shall not be defeated by grammar." tropico 6 arabic language