Finding the Fourth Proportional to 123,147.22, 169,939.76 and 69,431.76

Step by Step Solution

1. Step 1: Write the proportion equation
   123,147.22 : 169,939.76 = 69,431.76 : x
2. Step 2: Convert to fraction form
   123,147.22/169,939.76 = 69,431.76/x
3. Step 3: Cross multiply
   123,147.22x = 169,939.76 × 69,431.76
4. Step 4: Simplify right side
   123,147.22x = 11,799,216,630.78
5. Step 5: Solve for x
   x = 11,799,216,630.78/123,147.22
6. Step 6: Final answer
   x = 95,813.91