Finding the Fourth Proportional to 143,648.71, 198,233.34 and 79,116.72

Step by Step Solution

1. Step 1: Write the proportion equation
   143,648.71 : 198,233.34 = 79,116.72 : x
2. Step 2: Convert to fraction form
   143,648.71/198,233.34 = 79,116.72/x
3. Step 3: Cross multiply
   143,648.71x = 198,233.34 × 79,116.72
4. Step 4: Simplify right side
   143,648.71x = 15,683,571,060.41
5. Step 5: Solve for x
   x = 15,683,571,060.41/143,648.71
6. Step 6: Final answer
   x = 109,180.04