Finding the Fourth Proportional to 82.14, 123.39 and 47.98

Step by Step Solution

1. Step 1: Write the proportion equation
   82.14 : 123.39 = 47.98 : x
2. Step 2: Convert to fraction form
   82.14/123.39 = 47.98/x
3. Step 3: Cross multiply
   82.14x = 123.39 × 47.98
4. Step 4: Simplify right side
   82.14x = 5,920.01
5. Step 5: Solve for x
   x = 5,920.01/82.14
6. Step 6: Final answer
   x = 72.08