Finding the Fourth Proportional to 123,139.69, 169,932.50 and 69,424.32

Step by Step Solution

1. Step 1: Write the proportion equation
   123,139.69 : 169,932.50 = 69,424.32 : x
2. Step 2: Convert to fraction form
   123,139.69/169,932.50 = 69,424.32/x
3. Step 3: Cross multiply
   123,139.69x = 169,932.50 × 69,424.32
4. Step 4: Simplify right side
   123,139.69x = 11,797,448,808.87
5. Step 5: Solve for x
   x = 11,797,448,808.87/123,139.69
6. Step 6: Final answer
   x = 95,805.41