Finding the Fourth Proportional to 123,616.85, 170,594.61 and 69,909.89

Step by Step Solution

1. Step 1: Write the proportion equation
   123,616.85 : 170,594.61 = 69,909.89 : x
2. Step 2: Convert to fraction form
   123,616.85/170,594.61 = 69,909.89/x
3. Step 3: Cross multiply
   123,616.85x = 170,594.61 × 69,909.89
4. Step 4: Simplify right side
   123,616.85x = 11,926,250,419.69
5. Step 5: Solve for x
   x = 11,926,250,419.69/123,616.85
6. Step 6: Final answer
   x = 96,477.55