Finding the Fourth Proportional to 123,456.11, 170,383.26 and 69,744.59

Step by Step Solution

1. Step 1: Write the proportion equation
   123,456.11 : 170,383.26 = 69,744.59 : x
2. Step 2: Convert to fraction form
   123,456.11/170,383.26 = 69,744.59/x
3. Step 3: Cross multiply
   123,456.11x = 170,383.26 × 69,744.59
4. Step 4: Simplify right side
   123,456.11x = 11,883,309,498.10
5. Step 5: Solve for x
   x = 11,883,309,498.10/123,456.11
6. Step 6: Final answer
   x = 96,255.34