PROC EXPORT doesn't allow you to control the column width or the presentation. For that you need to use either ODS Excel or ODS Tagsets.ExcelXP.
https://blogs.sas.com/content/sgf/2017/02/20/tips-for-using-the-ods-excel-destination/
Most ODS TAGSETS things are relevant to ODS EXCEL as well. Unfortunately this isn't a straight forward as change a setting, but it's not super complicated either.
... View more