Finding the Fourth Proportional to 52,861.38, 72,951.96 and 28,991.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,861.38 : 72,951.96 = 28,991.50 : x
2. Step 2: Convert to fraction form
   52,861.38/72,951.96 = 28,991.50/x
3. Step 3: Cross multiply
   52,861.38x = 72,951.96 × 28,991.50
4. Step 4: Simplify right side
   52,861.38x = 2,114,986,748.34
5. Step 5: Solve for x
   x = 2,114,986,748.34/52,861.38
6. Step 6: Final answer
   x = 40,010.06