Finding the Fourth Proportional to 144.76, 199.83 and 89.48

Step by Step Solution

1. Step 1: Write the proportion equation
   144.76 : 199.83 = 89.48 : x
2. Step 2: Convert to fraction form
   144.76/199.83 = 89.48/x
3. Step 3: Cross multiply
   144.76x = 199.83 × 89.48
4. Step 4: Simplify right side
   144.76x = 17,880.79
5. Step 5: Solve for x
   x = 17,880.79/144.76
6. Step 6: Final answer
   x = 123.52