Finding the Fourth Proportional to 123,285.12, 170,134.86 and 69,570.78

Step by Step Solution

1. Step 1: Write the proportion equation
   123,285.12 : 170,134.86 = 69,570.78 : x
2. Step 2: Convert to fraction form
   123,285.12/170,134.86 = 69,570.78/x
3. Step 3: Cross multiply
   123,285.12x = 170,134.86 × 69,570.78
4. Step 4: Simplify right side
   123,285.12x = 11,836,414,915.39
5. Step 5: Solve for x
   x = 11,836,414,915.39/123,285.12
6. Step 6: Final answer
   x = 96,008.46