Finding the Fourth Proportional to 71,796.48, 99,080.67 and 39,967.43

Step by Step Solution

1. Step 1: Write the proportion equation
   71,796.48 : 99,080.67 = 39,967.43 : x
2. Step 2: Convert to fraction form
   71,796.48/99,080.67 = 39,967.43/x
3. Step 3: Cross multiply
   71,796.48x = 99,080.67 × 39,967.43
4. Step 4: Simplify right side
   71,796.48x = 3,959,999,172.24
5. Step 5: Solve for x
   x = 3,959,999,172.24/71,796.48
6. Step 6: Final answer
   x = 55,155.90