Finding the Fourth Proportional to 144,323.10, 199,161.72 and 80,661.42

Step by Step Solution

1. Step 1: Write the proportion equation
   144,323.10 : 199,161.72 = 80,661.42 : x
2. Step 2: Convert to fraction form
   144,323.10/199,161.72 = 80,661.42/x
3. Step 3: Cross multiply
   144,323.10x = 199,161.72 × 80,661.42
4. Step 4: Simplify right side
   144,323.10x = 16,064,667,144.84
5. Step 5: Solve for x
   x = 16,064,667,144.84/144,323.10
6. Step 6: Final answer
   x = 111,310.44