Finding the Fourth Proportional to 143,016.94, 197,363.42 and 79,355.20

Step by Step Solution

1. Step 1: Write the proportion equation
   143,016.94 : 197,363.42 = 79,355.20 : x
2. Step 2: Convert to fraction form
   143,016.94/197,363.42 = 79,355.20/x
3. Step 3: Cross multiply
   143,016.94x = 197,363.42 × 79,355.20
4. Step 4: Simplify right side
   143,016.94x = 15,661,813,666.78
5. Step 5: Solve for x
   x = 15,661,813,666.78/143,016.94
6. Step 6: Final answer
   x = 109,510.20