Finding the Fourth Proportional to 123,575.89, 170,540.42 and 69,863.17

Step by Step Solution

1. Step 1: Write the proportion equation
   123,575.89 : 170,540.42 = 69,863.17 : x
2. Step 2: Convert to fraction form
   123,575.89/170,540.42 = 69,863.17/x
3. Step 3: Cross multiply
   123,575.89x = 170,540.42 × 69,863.17
4. Step 4: Simplify right side
   123,575.89x = 11,914,494,354.33
5. Step 5: Solve for x
   x = 11,914,494,354.33/123,575.89
6. Step 6: Final answer
   x = 96,414.39