Finding the Fourth Proportional to 143,691.74, 198,300.72 and 80,029.54

Step by Step Solution

1. Step 1: Write the proportion equation
   143,691.74 : 198,300.72 = 80,029.54 : x
2. Step 2: Convert to fraction form
   143,691.74/198,300.72 = 80,029.54/x
3. Step 3: Cross multiply
   143,691.74x = 198,300.72 × 80,029.54
4. Step 4: Simplify right side
   143,691.74x = 15,869,915,403.27
5. Step 5: Solve for x
   x = 15,869,915,403.27/143,691.74
6. Step 6: Final answer
   x = 110,444.17