Finding the Fourth Proportional to 89.49, 134.06 and 53.36

Step by Step Solution

1. Step 1: Write the proportion equation
   89.49 : 134.06 = 53.36 : x
2. Step 2: Convert to fraction form
   89.49/134.06 = 53.36/x
3. Step 3: Cross multiply
   89.49x = 134.06 × 53.36
4. Step 4: Simplify right side
   89.49x = 7,152.50
5. Step 5: Solve for x
   x = 7,152.50/89.49
6. Step 6: Final answer
   x = 79.93