Finding the Fourth Proportional to 124,662.79, 172,048.20 and 76,914.91

Step by Step Solution

1. Step 1: Write the proportion equation
   124,662.79 : 172,048.20 = 76,914.91 : x
2. Step 2: Convert to fraction form
   124,662.79/172,048.20 = 76,914.91/x
3. Step 3: Cross multiply
   124,662.79x = 172,048.20 × 76,914.91
4. Step 4: Simplify right side
   124,662.79x = 13,233,071,818.66
5. Step 5: Solve for x
   x = 13,233,071,818.66/124,662.79
6. Step 6: Final answer
   x = 106,150.94