Finding the Fourth Proportional to 71,805.04, 99,086.52 and 39,973.12

Step by Step Solution

1. Step 1: Write the proportion equation
   71,805.04 : 99,086.52 = 39,973.12 : x
2. Step 2: Convert to fraction form
   71,805.04/99,086.52 = 39,973.12/x
3. Step 3: Cross multiply
   71,805.04x = 99,086.52 × 39,973.12
4. Step 4: Simplify right side
   71,805.04x = 3,960,797,354.34
5. Step 5: Solve for x
   x = 3,960,797,354.34/71,805.04
6. Step 6: Final answer
   x = 55,160.44