Finding the Fourth Proportional to 123,144.65, 169,937.20 and 69,428.59

Step by Step Solution

1. Step 1: Write the proportion equation
   123,144.65 : 169,937.20 = 69,428.59 : x
2. Step 2: Convert to fraction form
   123,144.65/169,937.20 = 69,428.59/x
3. Step 3: Cross multiply
   123,144.65x = 169,937.20 × 69,428.59
4. Step 4: Simplify right side
   123,144.65x = 11,798,500,184.55
5. Step 5: Solve for x
   x = 11,798,500,184.55/123,144.65
6. Step 6: Final answer
   x = 95,810.09