Finding the Fourth Proportional to 90.14, 123.58 and 88.52

Step by Step Solution

1. Step 1: Write the proportion equation
   90.14 : 123.58 = 88.52 : x
2. Step 2: Convert to fraction form
   90.14/123.58 = 88.52/x
3. Step 3: Cross multiply
   90.14x = 123.58 × 88.52
4. Step 4: Simplify right side
   90.14x = 10,939.30
5. Step 5: Solve for x
   x = 10,939.30/90.14
6. Step 6: Final answer
   x = 121.36