Finding the Fourth Proportional to 144,648.24, 199,612.33 and 80,988.31

Step by Step Solution

1. Step 1: Write the proportion equation
   144,648.24 : 199,612.33 = 80,988.31 : x
2. Step 2: Convert to fraction form
   144,648.24/199,612.33 = 80,988.31/x
3. Step 3: Cross multiply
   144,648.24x = 199,612.33 × 80,988.31
4. Step 4: Simplify right side
   144,648.24x = 16,166,265,261.86
5. Step 5: Solve for x
   x = 16,166,265,261.86/144,648.24
6. Step 6: Final answer
   x = 111,762.61