Finding the Fourth Proportional to 103.82, 155.69 and 88.76

Step by Step Solution

1. Step 1: Write the proportion equation
   103.82 : 155.69 = 88.76 : x
2. Step 2: Convert to fraction form
   103.82/155.69 = 88.76/x
3. Step 3: Cross multiply
   103.82x = 155.69 × 88.76
4. Step 4: Simplify right side
   103.82x = 13,819.32
5. Step 5: Solve for x
   x = 13,819.32/103.82
6. Step 6: Final answer
   x = 133.11