Finding the Fourth Proportional to 82.58, 123.87 and 46.49

Step by Step Solution

1. Step 1: Write the proportion equation
   82.58 : 123.87 = 46.49 : x
2. Step 2: Convert to fraction form
   82.58/123.87 = 46.49/x
3. Step 3: Cross multiply
   82.58x = 123.87 × 46.49
4. Step 4: Simplify right side
   82.58x = 5,758.72
5. Step 5: Solve for x
   x = 5,758.72/82.58
6. Step 6: Final answer
   x = 69.74