Finding the Fourth Proportional to 144,294.72, 199,131.12 and 80,635.20

Step by Step Solution

1. Step 1: Write the proportion equation
   144,294.72 : 199,131.12 = 80,635.20 : x
2. Step 2: Convert to fraction form
   144,294.72/199,131.12 = 80,635.20/x
3. Step 3: Cross multiply
   144,294.72x = 199,131.12 × 80,635.20
4. Step 4: Simplify right side
   144,294.72x = 16,056,977,687.42
5. Step 5: Solve for x
   x = 16,056,977,687.42/144,294.72
6. Step 6: Final answer
   x = 111,279.04