Finding the Fourth Proportional to 123.30, 185.01 and 71.97

Step by Step Solution

1. Step 1: Write the proportion equation
   123.30 : 185.01 = 71.97 : x
2. Step 2: Convert to fraction form
   123.30/185.01 = 71.97/x
3. Step 3: Cross multiply
   123.30x = 185.01 × 71.97
4. Step 4: Simplify right side
   123.30x = 13,315.17
5. Step 5: Solve for x
   x = 13,315.17/123.30
6. Step 6: Final answer
   x = 107.99