Finding the Fourth Proportional to 144,306.59, 199,139.65 and 80,656.69

Step by Step Solution

1. Step 1: Write the proportion equation
   144,306.59 : 199,139.65 = 80,656.69 : x
2. Step 2: Convert to fraction form
   144,306.59/199,139.65 = 80,656.69/x
3. Step 3: Cross multiply
   144,306.59x = 199,139.65 × 80,656.69
4. Step 4: Simplify right side
   144,306.59x = 16,061,945,016.76
5. Step 5: Solve for x
   x = 16,061,945,016.76/144,306.59
6. Step 6: Final answer
   x = 111,304.31