Finding the Fourth Proportional to 72,937.80, 109,440.72 and 28,553.04

Step by Step Solution

1. Step 1: Write the proportion equation
   72,937.80 : 109,440.72 = 28,553.04 : x
2. Step 2: Convert to fraction form
   72,937.80/109,440.72 = 28,553.04/x
3. Step 3: Cross multiply
   72,937.80x = 109,440.72 × 28,553.04
4. Step 4: Simplify right side
   72,937.80x = 3,124,865,255.79
5. Step 5: Solve for x
   x = 3,124,865,255.79/72,937.80
6. Step 6: Final answer
   x = 42,842.88