Finding the Fourth Proportional to 123.31, 184.83 and 82.74

Step by Step Solution

1. Step 1: Write the proportion equation
   123.31 : 184.83 = 82.74 : x
2. Step 2: Convert to fraction form
   123.31/184.83 = 82.74/x
3. Step 3: Cross multiply
   123.31x = 184.83 × 82.74
4. Step 4: Simplify right side
   123.31x = 15,292.83
5. Step 5: Solve for x
   x = 15,292.83/123.31
6. Step 6: Final answer
   x = 124.02