Removing white space around finished drawing

I know this is going to be an easy one with all the power of the software. I have created a diagram of an apartment complex complete with scale distance between the buildings and near by roads and fence. On the screen there is a good bit of white space around my drawing. I want to print to my 36" wide color printer without all the white space so the actual image will be as large as possible on a 36 x 48 board while keeping the proportions. Can someone please tell me the way to remove (or crop) the outer unused space so my print will be as large as my paper? 

Thank you so very much for your help

OK, now I feel stupid, I figured it out. It's in the print properties, print to one page and scale to fit page......Sure glad it's friday.

Hi all,

I have the same question: I want to get rid of the white space around my diagram but when exporting as PDF! I have a rather small figure and the current PDF output is a white page, with my figure in its middle ...  What I want is that my figure is scaled to fill the whole page..

I have been looking around to no avail thus any help will greatly be appreciated!

 Thanks

Özgün