Finding the Fourth Proportional to 142,936.46, 197,187.62 and 89,234.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,936.46 : 197,187.62 = 89,234.72 : x
2. Step 2: Convert to fraction form
   142,936.46/197,187.62 = 89,234.72/x
3. Step 3: Cross multiply
   142,936.46x = 197,187.62 × 89,234.72
4. Step 4: Simplify right side
   142,936.46x = 17,595,982,058.17
5. Step 5: Solve for x
   x = 17,595,982,058.17/142,936.46
6. Step 6: Final answer
   x = 123,103.52