Finding the Fourth Proportional to 162.05, 243.06 and 53.82

Step by Step Solution

1. Step 1: Write the proportion equation
   162.05 : 243.06 = 53.82 : x
2. Step 2: Convert to fraction form
   162.05/243.06 = 53.82/x
3. Step 3: Cross multiply
   162.05x = 243.06 × 53.82
4. Step 4: Simplify right side
   162.05x = 13,081.49
5. Step 5: Solve for x
   x = 13,081.49/162.05
6. Step 6: Final answer
   x = 80.73