Finding the Fourth Proportional to 71,709.24, 98,950.72 and 39,876.24

Step by Step Solution

1. Step 1: Write the proportion equation
   71,709.24 : 98,950.72 = 39,876.24 : x
2. Step 2: Convert to fraction form
   71,709.24/98,950.72 = 39,876.24/x
3. Step 3: Cross multiply
   71,709.24x = 98,950.72 × 39,876.24
4. Step 4: Simplify right side
   71,709.24x = 3,945,782,658.89
5. Step 5: Solve for x
   x = 3,945,782,658.89/71,709.24
6. Step 6: Final answer
   x = 55,024.75