Finding the Fourth Proportional to 160,981.42, 222,143.25 and 89,355.81

Step by Step Solution

1. Step 1: Write the proportion equation
   160,981.42 : 222,143.25 = 89,355.81 : x
2. Step 2: Convert to fraction form
   160,981.42/222,143.25 = 89,355.81/x
3. Step 3: Cross multiply
   160,981.42x = 222,143.25 × 89,355.81
4. Step 4: Simplify right side
   160,981.42x = 19,849,789,593.00
5. Step 5: Solve for x
   x = 19,849,789,593.00/160,981.42
6. Step 6: Final answer
   x = 123,304.85