Finding the Fourth Proportional to 111,681.64, 154,116.43 and 63,939.43

Step by Step Solution

1. Step 1: Write the proportion equation
   111,681.64 : 154,116.43 = 63,939.43 : x
2. Step 2: Convert to fraction form
   111,681.64/154,116.43 = 63,939.43/x
3. Step 3: Cross multiply
   111,681.64x = 154,116.43 × 63,939.43
4. Step 4: Simplify right side
   111,681.64x = 9,854,116,687.83
5. Step 5: Solve for x
   x = 9,854,116,687.83/111,681.64
6. Step 6: Final answer
   x = 88,233.99