Finding the Fourth Proportional to 89.50, 123.55 and 55.02

Step by Step Solution

1. Step 1: Write the proportion equation
   89.50 : 123.55 = 55.02 : x
2. Step 2: Convert to fraction form
   89.50/123.55 = 55.02/x
3. Step 3: Cross multiply
   89.50x = 123.55 × 55.02
4. Step 4: Simplify right side
   89.50x = 6,797.72
5. Step 5: Solve for x
   x = 6,797.72/89.50
6. Step 6: Final answer
   x = 75.95