Finding the Fourth Proportional to 200.49, 276.69 and 111.98

Step by Step Solution

1. Step 1: Write the proportion equation
   200.49 : 276.69 = 111.98 : x
2. Step 2: Convert to fraction form
   200.49/276.69 = 111.98/x
3. Step 3: Cross multiply
   200.49x = 276.69 × 111.98
4. Step 4: Simplify right side
   200.49x = 30,983.31
5. Step 5: Solve for x
   x = 30,983.31/200.49
6. Step 6: Final answer
   x = 154.53