Finding the Fourth Proportional to 82.48, 123.74 and 28.37

Step by Step Solution

1. Step 1: Write the proportion equation
   82.48 : 123.74 = 28.37 : x
2. Step 2: Convert to fraction form
   82.48/123.74 = 28.37/x
3. Step 3: Cross multiply
   82.48x = 123.74 × 28.37
4. Step 4: Simplify right side
   82.48x = 3,510.36
5. Step 5: Solve for x
   x = 3,510.36/82.48
6. Step 6: Final answer
   x = 42.56