Finding the Fourth Proportional to 144,272.72, 199,100.76 and 80,613.20

Step by Step Solution

1. Step 1: Write the proportion equation
   144,272.72 : 199,100.76 = 80,613.20 : x
2. Step 2: Convert to fraction form
   144,272.72/199,100.76 = 80,613.20/x
3. Step 3: Cross multiply
   144,272.72x = 199,100.76 × 80,613.20
4. Step 4: Simplify right side
   144,272.72x = 16,050,149,386.03
5. Step 5: Solve for x
   x = 16,050,149,386.03/144,272.72
6. Step 6: Final answer
   x = 111,248.68