Finding the Fourth Proportional to 123,680.42, 170,679.04 and 69,964.30

Step by Step Solution

1. Step 1: Write the proportion equation
   123,680.42 : 170,679.04 = 69,964.30 : x
2. Step 2: Convert to fraction form
   123,680.42/170,679.04 = 69,964.30/x
3. Step 3: Cross multiply
   123,680.42x = 170,679.04 × 69,964.30
4. Step 4: Simplify right side
   123,680.42x = 11,941,439,558.27
5. Step 5: Solve for x
   x = 11,941,439,558.27/123,680.42
6. Step 6: Final answer
   x = 96,550.77