Finding the Fourth Proportional to 142,949.25, 197,140.82 and 89,239.23

Step by Step Solution

1. Step 1: Write the proportion equation
   142,949.25 : 197,140.82 = 89,239.23 : x
2. Step 2: Convert to fraction form
   142,949.25/197,140.82 = 89,239.23/x
3. Step 3: Cross multiply
   142,949.25x = 197,140.82 × 89,239.23
4. Step 4: Simplify right side
   142,949.25x = 17,592,694,532.17
5. Step 5: Solve for x
   x = 17,592,694,532.17/142,949.25
6. Step 6: Final answer
   x = 123,069.51