Finding the Fourth Proportional to 82.35, 123.42 and 33.55

Step by Step Solution

1. Step 1: Write the proportion equation
   82.35 : 123.42 = 33.55 : x
2. Step 2: Convert to fraction form
   82.35/123.42 = 33.55/x
3. Step 3: Cross multiply
   82.35x = 123.42 × 33.55
4. Step 4: Simplify right side
   82.35x = 4,140.56
5. Step 5: Solve for x
   x = 4,140.56/82.35
6. Step 6: Final answer
   x = 50.28