Finding the Fourth Proportional to 72,061.50, 99,445.85 and 39,798.29

Step by Step Solution

1. Step 1: Write the proportion equation
   72,061.50 : 99,445.85 = 39,798.29 : x
2. Step 2: Convert to fraction form
   72,061.50/99,445.85 = 39,798.29/x
3. Step 3: Cross multiply
   72,061.50x = 99,445.85 × 39,798.29
4. Step 4: Simplify right side
   72,061.50x = 3,957,774,777.60
5. Step 5: Solve for x
   x = 3,957,774,777.60/72,061.50
6. Step 6: Final answer
   x = 54,922.18