Finding the Fourth Proportional to 144,300.38, 199,130.81 and 80,638.70

Step by Step Solution

1. Step 1: Write the proportion equation
   144,300.38 : 199,130.81 = 80,638.70 : x
2. Step 2: Convert to fraction form
   144,300.38/199,130.81 = 80,638.70/x
3. Step 3: Cross multiply
   144,300.38x = 199,130.81 × 80,638.70
4. Step 4: Simplify right side
   144,300.38x = 16,057,649,648.35
5. Step 5: Solve for x
   x = 16,057,649,648.35/144,300.38
6. Step 6: Final answer
   x = 111,279.33