Finding the Fourth Proportional to 82.56, 123.86 and 34.47

Step by Step Solution

1. Step 1: Write the proportion equation
   82.56 : 123.86 = 34.47 : x
2. Step 2: Convert to fraction form
   82.56/123.86 = 34.47/x
3. Step 3: Cross multiply
   82.56x = 123.86 × 34.47
4. Step 4: Simplify right side
   82.56x = 4,269.45
5. Step 5: Solve for x
   x = 4,269.45/82.56
6. Step 6: Final answer
   x = 51.71