Finding the Fourth Proportional to 144,298.38, 199,131.42 and 80,636.17

Step by Step Solution

1. Step 1: Write the proportion equation
   144,298.38 : 199,131.42 = 80,636.17 : x
2. Step 2: Convert to fraction form
   144,298.38/199,131.42 = 80,636.17/x
3. Step 3: Cross multiply
   144,298.38x = 199,131.42 × 80,636.17
4. Step 4: Simplify right side
   144,298.38x = 16,057,195,035.46
5. Step 5: Solve for x
   x = 16,057,195,035.46/144,298.38
6. Step 6: Final answer
   x = 111,277.72