Finding the Fourth Proportional to 71,807.06, 99,097.89 and 39,975.86

Step by Step Solution

1. Step 1: Write the proportion equation
   71,807.06 : 99,097.89 = 39,975.86 : x
2. Step 2: Convert to fraction form
   71,807.06/99,097.89 = 39,975.86/x
3. Step 3: Cross multiply
   71,807.06x = 99,097.89 × 39,975.86
4. Step 4: Simplify right side
   71,807.06x = 3,961,523,376.94
5. Step 5: Solve for x
   x = 3,961,523,376.94/71,807.06
6. Step 6: Final answer
   x = 55,169.00