Finding the Fourth Proportional to 144,274.72, 199,103.52 and 80,615.20

Step by Step Solution

1. Step 1: Write the proportion equation
   144,274.72 : 199,103.52 = 80,615.20 : x
2. Step 2: Convert to fraction form
   144,274.72/199,103.52 = 80,615.20/x
3. Step 3: Cross multiply
   144,274.72x = 199,103.52 × 80,615.20
4. Step 4: Simplify right side
   144,274.72x = 16,050,770,085.50
5. Step 5: Solve for x
   x = 16,050,770,085.50/144,274.72
6. Step 6: Final answer
   x = 111,251.44