You just won the lottery, and you'd like to make a one-time donation to the university that will fund future scholarships of $17,811 per year. The first scholarship will be awarded 4 years from today and they will continue each year thereafter. If the university endowment pays an annual interest rate of 4.2%, how much cash must you give today to fully fund the future scholarships? Enter your answer as a positive number rounded to the nearest dollar