Finding the Fourth Proportional to 123,681.42, 170,680.42 and 69,965.30

Step by Step Solution

1. Step 1: Write the proportion equation
   123,681.42 : 170,680.42 = 69,965.30 : x
2. Step 2: Convert to fraction form
   123,681.42/170,680.42 = 69,965.30/x
3. Step 3: Cross multiply
   123,681.42x = 170,680.42 × 69,965.30
4. Step 4: Simplify right side
   123,681.42x = 11,941,706,789.43
5. Step 5: Solve for x
   x = 11,941,706,789.43/123,681.42
6. Step 6: Final answer
   x = 96,552.15