Finding the Fourth Proportional to 144,351.72, 199,201.86 and 80,697

Step by Step Solution

1. Step 1: Write the proportion equation
   144,351.72 : 199,201.86 = 80,697 : x
2. Step 2: Convert to fraction form
   144,351.72/199,201.86 = 80,697/x
3. Step 3: Cross multiply
   144,351.72x = 199,201.86 × 80,697
4. Step 4: Simplify right side
   144,351.72x = 16,074,992,496.42
5. Step 5: Solve for x
   x = 16,074,992,496.42/144,351.72
6. Step 6: Final answer
   x = 111,359.90