Finding the Fourth Proportional to 123.10, 184.71 and 71.68

Step by Step Solution

1. Step 1: Write the proportion equation
   123.10 : 184.71 = 71.68 : x
2. Step 2: Convert to fraction form
   123.10/184.71 = 71.68/x
3. Step 3: Cross multiply
   123.10x = 184.71 × 71.68
4. Step 4: Simplify right side
   123.10x = 13,240.01
5. Step 5: Solve for x
   x = 13,240.01/123.10
6. Step 6: Final answer
   x = 107.55