Finding the Fourth Proportional to 72,308.52, 99,792 and 40,476.96

Step by Step Solution

1. Step 1: Write the proportion equation
   72,308.52 : 99,792 = 40,476.96 : x
2. Step 2: Convert to fraction form
   72,308.52/99,792 = 40,476.96/x
3. Step 3: Cross multiply
   72,308.52x = 99,792 × 40,476.96
4. Step 4: Simplify right side
   72,308.52x = 4,039,276,792.32
5. Step 5: Solve for x
   x = 4,039,276,792.32/72,308.52
6. Step 6: Final answer
   x = 55,861.70