Finding the Fourth Proportional to 83,285.91, 124,728.67 and 47,639.16

Step by Step Solution

1. Step 1: Write the proportion equation
   83,285.91 : 124,728.67 = 47,639.16 : x
2. Step 2: Convert to fraction form
   83,285.91/124,728.67 = 47,639.16/x
3. Step 3: Cross multiply
   83,285.91x = 124,728.67 × 47,639.16
4. Step 4: Simplify right side
   83,285.91x = 5,941,969,066.72
5. Step 5: Solve for x
   x = 5,941,969,066.72/83,285.91
6. Step 6: Final answer
   x = 71,344.23