Finding the Fourth Proportional to 124,661.79, 172,046.82 and 76,913.91

Step by Step Solution

1. Step 1: Write the proportion equation
   124,661.79 : 172,046.82 = 76,913.91 : x
2. Step 2: Convert to fraction form
   124,661.79/172,046.82 = 76,913.91/x
3. Step 3: Cross multiply
   124,661.79x = 172,046.82 × 76,913.91
4. Step 4: Simplify right side
   124,661.79x = 13,232,793,629.27
5. Step 5: Solve for x
   x = 13,232,793,629.27/124,661.79
6. Step 6: Final answer
   x = 106,149.56