Finding the Fourth Proportional to 52,715.76, 72,740.56 and 31,490.52

Step by Step Solution

1. Step 1: Write the proportion equation
   52,715.76 : 72,740.56 = 31,490.52 : x
2. Step 2: Convert to fraction form
   52,715.76/72,740.56 = 31,490.52/x
3. Step 3: Cross multiply
   52,715.76x = 72,740.56 × 31,490.52
4. Step 4: Simplify right side
   52,715.76x = 2,290,638,059.49
5. Step 5: Solve for x
   x = 2,290,638,059.49/52,715.76
6. Step 6: Final answer
   x = 43,452.62