Finding the Fourth Proportional to 143,948.84, 198,649.72 and 80,290.72

Step by Step Solution

1. Step 1: Write the proportion equation
   143,948.84 : 198,649.72 = 80,290.72 : x
2. Step 2: Convert to fraction form
   143,948.84/198,649.72 = 80,290.72/x
3. Step 3: Cross multiply
   143,948.84x = 198,649.72 × 80,290.72
4. Step 4: Simplify right side
   143,948.84x = 15,949,729,046.60
5. Step 5: Solve for x
   x = 15,949,729,046.60/143,948.84
6. Step 6: Final answer
   x = 110,801.37