Finding the Fourth Proportional to 71,682.02, 98,923.72 and 39,419.10

Step by Step Solution

1. Step 1: Write the proportion equation
   71,682.02 : 98,923.72 = 39,419.10 : x
2. Step 2: Convert to fraction form
   71,682.02/98,923.72 = 39,419.10/x
3. Step 3: Cross multiply
   71,682.02x = 98,923.72 × 39,419.10
4. Step 4: Simplify right side
   71,682.02x = 3,899,484,011.05
5. Step 5: Solve for x
   x = 3,899,484,011.05/71,682.02
6. Step 6: Final answer
   x = 54,399.75