Finding the Fourth Proportional to 71,939.59, 99,273.00 and 39,679.83

Step by Step Solution

1. Step 1: Write the proportion equation
   71,939.59 : 99,273.00 = 39,679.83 : x
2. Step 2: Convert to fraction form
   71,939.59/99,273.00 = 39,679.83/x
3. Step 3: Cross multiply
   71,939.59x = 99,273.00 × 39,679.83
4. Step 4: Simplify right side
   71,939.59x = 3,939,135,068.83
5. Step 5: Solve for x
   x = 3,939,135,068.83/71,939.59
6. Step 6: Final answer
   x = 54,756.15