Finding the Fourth Proportional to 89.69, 134.73 and 55.49

Step by Step Solution

1. Step 1: Write the proportion equation
   89.69 : 134.73 = 55.49 : x
2. Step 2: Convert to fraction form
   89.69/134.73 = 55.49/x
3. Step 3: Cross multiply
   89.69x = 134.73 × 55.49
4. Step 4: Simplify right side
   89.69x = 7,475.49
5. Step 5: Solve for x
   x = 7,475.49/89.69
6. Step 6: Final answer
   x = 83.35