Finding the Fourth Proportional to 142,945.50, 197,135.67 and 89,235.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142,945.50 : 197,135.67 = 89,235.48 : x
2. Step 2: Convert to fraction form
   142,945.50/197,135.67 = 89,235.48/x
3. Step 3: Cross multiply
   142,945.50x = 197,135.67 × 89,235.48
4. Step 4: Simplify right side
   142,945.50x = 17,591,496,137.57
5. Step 5: Solve for x
   x = 17,591,496,137.57/142,945.50
6. Step 6: Final answer
   x = 123,064.36