Q: Other on About my Mac is taking up 205.32 GB of disk space

About “Other”

https://support.apple.com/en-us/HT202867

Go step by step and check.

1. Start up in Safe Mode.

    http://support.apple.com/kb/PH11212

2. Backup your computer.

3. Empty Trash.

    Finder

    Click on an empty spot on the Desktop to activate Finder.

    Click “Empty Trash” to empty Trash.

   Mail

    Click Mailbox in the  in the Mail menu bar.

    Erase Deleted Items > In All Accounts

    Erase Junk Mail

   Photos

   File > Recently Deleted > Click the “Delete All” button at the top right corner

   iPhoto

   iPhoto > Empty iPhoto Trash

   https://support.apple.com/kb/PH13806?locale=en_US

4. Disk space / Time Machine / Local Snapshots

  Local backups

   http://support.apple.com/kb/ht4878

5. Delete old iOS Devices Backup.

    iTunes > Preferences > Devices

    Highlight the old Backups , press “Delete Backup” and then “OK”.

    http://support.apple.com/kb/HT4946?viewlocale=en_US&locale=en_US

6. Re-index Macintosh HD.

    This will take a while. Wait until it is finished.

    System Preferences > Spotlight > Privacy

    http://support.apple.com/kb/ht2409