Finding the Fourth Proportional to 123,148.72, 169,864.24 and 84,909.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,148.72 : 169,864.24 = 84,909.88 : x
2. Step 2: Convert to fraction form
   123,148.72/169,864.24 = 84,909.88/x
3. Step 3: Cross multiply
   123,148.72x = 169,864.24 × 84,909.88
4. Step 4: Simplify right side
   123,148.72x = 14,423,152,234.69
5. Step 5: Solve for x
   x = 14,423,152,234.69/123,148.72
6. Step 6: Final answer
   x = 117,119.79