Finding the Fourth Proportional to 123,059.92, 169,864.88 and 72,089

Step by Step Solution

1. Step 1: Write the proportion equation
   123,059.92 : 169,864.88 = 72,089 : x
2. Step 2: Convert to fraction form
   123,059.92/169,864.88 = 72,089/x
3. Step 3: Cross multiply
   123,059.92x = 169,864.88 × 72,089
4. Step 4: Simplify right side
   123,059.92x = 12,245,389,334.32
5. Step 5: Solve for x
   x = 12,245,389,334.32/123,059.92
6. Step 6: Final answer
   x = 99,507.54