Finding the Fourth Proportional to 71,799.79, 99,081.03 and 39,968.00

Step by Step Solution

1. Step 1: Write the proportion equation
   71,799.79 : 99,081.03 = 39,968.00 : x
2. Step 2: Convert to fraction form
   71,799.79/99,081.03 = 39,968.00/x
3. Step 3: Cross multiply
   71,799.79x = 99,081.03 × 39,968.00
4. Step 4: Simplify right side
   71,799.79x = 3,960,071,004.62
5. Step 5: Solve for x
   x = 3,960,071,004.62/71,799.79
6. Step 6: Final answer
   x = 55,154.36