Finding the Fourth Proportional to 123.49, 184.69 and 72.01

Step by Step Solution

1. Step 1: Write the proportion equation
   123.49 : 184.69 = 72.01 : x
2. Step 2: Convert to fraction form
   123.49/184.69 = 72.01/x
3. Step 3: Cross multiply
   123.49x = 184.69 × 72.01
4. Step 4: Simplify right side
   123.49x = 13,299.53
5. Step 5: Solve for x
   x = 13,299.53/123.49
6. Step 6: Final answer
   x = 107.70