Finding the Fourth Proportional to 123.58, 185.29 and 82.47

Step by Step Solution

1. Step 1: Write the proportion equation
   123.58 : 185.29 = 82.47 : x
2. Step 2: Convert to fraction form
   123.58/185.29 = 82.47/x
3. Step 3: Cross multiply
   123.58x = 185.29 × 82.47
4. Step 4: Simplify right side
   123.58x = 15,280.31
5. Step 5: Solve for x
   x = 15,280.31/123.58
6. Step 6: Final answer
   x = 123.65