Finding the Fourth Proportional to 143,063.43, 197,423.78 and 79,399.59

Step by Step Solution

1. Step 1: Write the proportion equation
   143,063.43 : 197,423.78 = 79,399.59 : x
2. Step 2: Convert to fraction form
   143,063.43/197,423.78 = 79,399.59/x
3. Step 3: Cross multiply
   143,063.43x = 197,423.78 × 79,399.59
4. Step 4: Simplify right side
   143,063.43x = 15,675,366,791.25
5. Step 5: Solve for x
   x = 15,675,366,791.25/143,063.43
6. Step 6: Final answer
   x = 109,569.35