Finding the Fourth Proportional to 144,296.10, 199,128.15 and 80,633.88

Step by Step Solution

1. Step 1: Write the proportion equation
   144,296.10 : 199,128.15 = 80,633.88 : x
2. Step 2: Convert to fraction form
   144,296.10/199,128.15 = 80,633.88/x
3. Step 3: Cross multiply
   144,296.10x = 199,128.15 × 80,633.88
4. Step 4: Simplify right side
   144,296.10x = 16,056,475,351.72
5. Step 5: Solve for x
   x = 16,056,475,351.72/144,296.10
6. Step 6: Final answer
   x = 111,274.49