Finding the Fourth Proportional to 83,411.31, 115,106.31 and 47,600.40

Step by Step Solution

1. Step 1: Write the proportion equation
   83,411.31 : 115,106.31 = 47,600.40 : x
2. Step 2: Convert to fraction form
   83,411.31/115,106.31 = 47,600.40/x
3. Step 3: Cross multiply
   83,411.31x = 115,106.31 × 47,600.40
4. Step 4: Simplify right side
   83,411.31x = 5,479,106,398.52
5. Step 5: Solve for x
   x = 5,479,106,398.52/83,411.31
6. Step 6: Final answer
   x = 65,687.81