Finding the Fourth Proportional to 89.69, 134.39 and 55.41

Step by Step Solution

1. Step 1: Write the proportion equation
   89.69 : 134.39 = 55.41 : x
2. Step 2: Convert to fraction form
   89.69/134.39 = 55.41/x
3. Step 3: Cross multiply
   89.69x = 134.39 × 55.41
4. Step 4: Simplify right side
   89.69x = 7,446.27
5. Step 5: Solve for x
   x = 7,446.27/89.69
6. Step 6: Final answer
   x = 83.03