Finding the Fourth Proportional to 143,947.67, 198,648.52 and 79,419.15

Step by Step Solution

1. Step 1: Write the proportion equation
   143,947.67 : 198,648.52 = 79,419.15 : x
2. Step 2: Convert to fraction form
   143,947.67/198,648.52 = 79,419.15/x
3. Step 3: Cross multiply
   143,947.67x = 198,648.52 × 79,419.15
4. Step 4: Simplify right side
   143,947.67x = 15,776,496,408.61
5. Step 5: Solve for x
   x = 15,776,496,408.61/143,947.67
6. Step 6: Final answer
   x = 109,598.84