Finding the Fourth Proportional to 71,843.31, 99,142.83 and 39,577.28

Step by Step Solution

1. Step 1: Write the proportion equation
   71,843.31 : 99,142.83 = 39,577.28 : x
2. Step 2: Convert to fraction form
   71,843.31/99,142.83 = 39,577.28/x
3. Step 3: Cross multiply
   71,843.31x = 99,142.83 × 39,577.28
4. Step 4: Simplify right side
   71,843.31x = 3,923,803,047.19
5. Step 5: Solve for x
   x = 3,923,803,047.19/71,843.31
6. Step 6: Final answer
   x = 54,616.12