Kinabalu listing summary in 4 columns

[billwide]

I need to change the Listing columns from 2 to 4 columns. I check the code in template.css

.listing-summary.column1 {
width:45%;
clear:left;
}
.listing-summary.column2 {
margin-left:10px;	
width:45%;
}

I would like to be able to show listing sumary of Kinabalu in 4 columns, but on configurations of the template I just see the option for 1 or 2 columns.

Where I can edit the file(s) to show Kinabalu Listing Sumary in 4 columns?

This is the link:
http://www.modelshighclass.com/en/escorts/spain/madrid

I will be glad for any help.