An article from 2007, not completely sure of the sourcing but it seems to be accurate from my observations over the last 15 - 20 years on B'way.
http://thehopefultraveler.blogspot.com/2007/04/broadway-ticket-buyers-where-does-money.html The bottom line (or "nut" as the weekly expenses are referred to)
ranges from $300k - $600k (in 2007)
(today I would estimate more along $300k - $750k)
in descending order (out of a $100 ticket)
$24.75 RETURN OF CAPITAL TO PRODUCERS
$15.70 ROYALTIES
$11.20 ADVERTISING/MARKETING
$9.90 UNION BENEFITS/PAYROLL TAXES
$6.90 SALARIES (CREW)
$6.70 THEATER RENT
$5.30 SALARIES (CAST)
$4.50 THEATER UTILITIES AND MISCELLANEOUS EXPENSES
$4.10 BOX-OFFICE COMMISSIONS
$4.10 RENTALS
$2.00 SALARIES (MUSICIANS)
$1.40 SALARIES (OTHER)
$1.25 THEATER FACILITY FEE
$1.20 UPKEEP OF COSTUMES
$1.00 INSURANCE/ACCOUNTING
"It's never too late to have a happy childhood. "
- Tom Robbins