Finding the Fourth Proportional to 124,734.79, 172,134.18 and 71,019.83

Step by Step Solution

1. Step 1: Write the proportion equation
   124,734.79 : 172,134.18 = 71,019.83 : x
2. Step 2: Convert to fraction form
   124,734.79/172,134.18 = 71,019.83/x
3. Step 3: Cross multiply
   124,734.79x = 172,134.18 × 71,019.83
4. Step 4: Simplify right side
   124,734.79x = 12,224,940,200.79
5. Step 5: Solve for x
   x = 12,224,940,200.79/124,734.79
6. Step 6: Final answer
   x = 98,007.46