Finding the Fourth Proportional to 144,049.89, 198,799.87 and 79,531.57

Step by Step Solution

1. Step 1: Write the proportion equation
   144,049.89 : 198,799.87 = 79,531.57 : x
2. Step 2: Convert to fraction form
   144,049.89/198,799.87 = 79,531.57/x
3. Step 3: Cross multiply
   144,049.89x = 198,799.87 × 79,531.57
4. Step 4: Simplify right side
   144,049.89x = 15,810,865,975.69
5. Step 5: Solve for x
   x = 15,810,865,975.69/144,049.89
6. Step 6: Final answer
   x = 109,759.65