Finding the Fourth Proportional to 49,124.31, 67,788.57 and 28,987.50

Step by Step Solution

1. Step 1: Write the proportion equation
   49,124.31 : 67,788.57 = 28,987.50 : x
2. Step 2: Convert to fraction form
   49,124.31/67,788.57 = 28,987.50/x
3. Step 3: Cross multiply
   49,124.31x = 67,788.57 × 28,987.50
4. Step 4: Simplify right side
   49,124.31x = 1,965,021,172.88
5. Step 5: Solve for x
   x = 1,965,021,172.88/49,124.31
6. Step 6: Final answer
   x = 40,000.99