Finding the Fourth Proportional to 123,643.79, 170,626.41 and 69,926.79

Step by Step Solution

1. Step 1: Write the proportion equation
   123,643.79 : 170,626.41 = 69,926.79 : x
2. Step 2: Convert to fraction form
   123,643.79/170,626.41 = 69,926.79/x
3. Step 3: Cross multiply
   123,643.79x = 170,626.41 × 69,926.79
4. Step 4: Simplify right side
   123,643.79x = 11,931,357,140.52
5. Step 5: Solve for x
   x = 11,931,357,140.52/123,643.79
6. Step 6: Final answer
   x = 96,497.83