Finding the Fourth Proportional to 123,145.15, 169,937.89 and 69,429.09

Step by Step Solution

1. Step 1: Write the proportion equation
   123,145.15 : 169,937.89 = 69,429.09 : x
2. Step 2: Convert to fraction form
   123,145.15/169,937.89 = 69,429.09/x
3. Step 3: Cross multiply
   123,145.15x = 169,937.89 × 69,429.09
4. Step 4: Simplify right side
   123,145.15x = 11,798,633,059.22
5. Step 5: Solve for x
   x = 11,798,633,059.22/123,145.15
6. Step 6: Final answer
   x = 95,810.78