Finding the Fourth Proportional to 124,380.50, 171,669.58 and 86,632.88

Step by Step Solution

1. Step 1: Write the proportion equation
   124,380.50 : 171,669.58 = 86,632.88 : x
2. Step 2: Convert to fraction form
   124,380.50/171,669.58 = 86,632.88/x
3. Step 3: Cross multiply
   124,380.50x = 171,669.58 × 86,632.88
4. Step 4: Simplify right side
   124,380.50x = 14,872,229,048.86
5. Step 5: Solve for x
   x = 14,872,229,048.86/124,380.50
6. Step 6: Final answer
   x = 119,570.43