Finding the Fourth Proportional to 123.33, 184.98 and 72

Step by Step Solution

1. Step 1: Write the proportion equation
   123.33 : 184.98 = 72 : x
2. Step 2: Convert to fraction form
   123.33/184.98 = 72/x
3. Step 3: Cross multiply
   123.33x = 184.98 × 72
4. Step 4: Simplify right side
   123.33x = 13,318.83
5. Step 5: Solve for x
   x = 13,318.83/123.33
6. Step 6: Final answer
   x = 107.99