If you want to include the total raised by Event Sponsors in your fundraising total, there is a FundEasy Preference for that on the Page Options Tab under Page Customization.
When you click this checkbox:
Your Event Sponsors total will show in the Event Total on the Event Web Page
This total will also show when you mouseover the Total Raised link in the grey section of the column browser
Other articles you might enjoy:
Add Event Sponsors to your event
Adding Event Sponsors with no Logo
Add Event Sponsors to your templates