Finding the Fourth Proportional to 123,143.59, 169,934.76 and 69,428.14

Step by Step Solution

1. Step 1: Write the proportion equation
   123,143.59 : 169,934.76 = 69,428.14 : x
2. Step 2: Convert to fraction form
   123,143.59/169,934.76 = 69,428.14/x
3. Step 3: Cross multiply
   123,143.59x = 169,934.76 × 69,428.14
4. Step 4: Simplify right side
   123,143.59x = 11,798,253,883.31
5. Step 5: Solve for x
   x = 11,798,253,883.31/123,143.59
6. Step 6: Final answer
   x = 95,808.92