Finding the Fourth Proportional to 82.16, 123.24 and 33.42

Step by Step Solution

1. Step 1: Write the proportion equation
   82.16 : 123.24 = 33.42 : x
2. Step 2: Convert to fraction form
   82.16/123.24 = 33.42/x
3. Step 3: Cross multiply
   82.16x = 123.24 × 33.42
4. Step 4: Simplify right side
   82.16x = 4,118.51
5. Step 5: Solve for x
   x = 4,118.51/82.16
6. Step 6: Final answer
   x = 50.13