Finding the Fourth Proportional to 143,087.55, 197,469.78 and 79,426.41

Step by Step Solution

1. Step 1: Write the proportion equation
   143,087.55 : 197,469.78 = 79,426.41 : x
2. Step 2: Convert to fraction form
   143,087.55/197,469.78 = 79,426.41/x
3. Step 3: Cross multiply
   143,087.55x = 197,469.78 × 79,426.41
4. Step 4: Simplify right side
   143,087.55x = 15,684,315,708.89
5. Step 5: Solve for x
   x = 15,684,315,708.89/143,087.55
6. Step 6: Final answer
   x = 109,613.42