Finding the Fourth Proportional to 142,949.75, 197,396.06 and 89,326.40

Step by Step Solution

1. Step 1: Write the proportion equation
   142,949.75 : 197,396.06 = 89,326.40 : x
2. Step 2: Convert to fraction form
   142,949.75/197,396.06 = 89,326.40/x
3. Step 3: Cross multiply
   142,949.75x = 197,396.06 × 89,326.40
4. Step 4: Simplify right side
   142,949.75x = 17,632,677,980.37
5. Step 5: Solve for x
   x = 17,632,677,980.37/142,949.75
6. Step 6: Final answer
   x = 123,348.79