Finding the Fourth Proportional to 144,395.56, 199,273.38 and 80,729.80

Step by Step Solution

1. Step 1: Write the proportion equation
   144,395.56 : 199,273.38 = 80,729.80 : x
2. Step 2: Convert to fraction form
   144,395.56/199,273.38 = 80,729.80/x
3. Step 3: Cross multiply
   144,395.56x = 199,273.38 × 80,729.80
4. Step 4: Simplify right side
   144,395.56x = 16,087,300,112.72
5. Step 5: Solve for x
   x = 16,087,300,112.72/144,395.56
6. Step 6: Final answer
   x = 111,411.32