Finding the Fourth Proportional to 142,951.50, 197,143.94 and 89,241.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142,951.50 : 197,143.94 = 89,241.48 : x
2. Step 2: Convert to fraction form
   142,951.50/197,143.94 = 89,241.48/x
3. Step 3: Cross multiply
   142,951.50x = 197,143.94 × 89,241.48
4. Step 4: Simplify right side
   142,951.50x = 17,593,416,978.63
5. Step 5: Solve for x
   x = 17,593,416,978.63/142,951.50
6. Step 6: Final answer
   x = 123,072.63