Finding the Fourth Proportional to 144,462.78, 199,359.90 and 80,806.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,462.78 : 199,359.90 = 80,806.50 : x
2. Step 2: Convert to fraction form
   144,462.78/199,359.90 = 80,806.50/x
3. Step 3: Cross multiply
   144,462.78x = 199,359.90 × 80,806.50
4. Step 4: Simplify right side
   144,462.78x = 16,109,575,759.35
5. Step 5: Solve for x
   x = 16,109,575,759.35/144,462.78
6. Step 6: Final answer
   x = 111,513.68