Finding the Fourth Proportional to 111,426.88, 153,780.14 and 63,687.08

Step by Step Solution

1. Step 1: Write the proportion equation
   111,426.88 : 153,780.14 = 63,687.08 : x
2. Step 2: Convert to fraction form
   111,426.88/153,780.14 = 63,687.08/x
3. Step 3: Cross multiply
   111,426.88x = 153,780.14 × 63,687.08
4. Step 4: Simplify right side
   111,426.88x = 9,793,808,078.59
5. Step 5: Solve for x
   x = 9,793,808,078.59/111,426.88
6. Step 6: Final answer
   x = 87,894.48