i have a larger file of 300mb and only managed to reduce it to 100mb despite purging everything and deleting all or most components. please help its urgent ! im struggling : (
You have more than 24 millions edges and more than 6.6 millions faces in that model.
You also gave more than 24 000 instances of components.
You must have some components that are huge.
Save a copy of your file to preserve it as a repository of the components that you may need.
With the outliner I see a lot of groups but not that many components. Using the outliner, you can probably delete many of these, then purge the file and then save it.
Once that is dome and you have a more manageable model, try copying the large components, one by one, from your 106 Megs file into a new file. Save that to see the size. Some model from the 3D warehouse can bloat a SketchUp model real quick.