Finding the Fourth Proportional to 123.51, 184.72 and 72.02

Step by Step Solution

1. Step 1: Write the proportion equation
   123.51 : 184.72 = 72.02 : x
2. Step 2: Convert to fraction form
   123.51/184.72 = 72.02/x
3. Step 3: Cross multiply
   123.51x = 184.72 × 72.02
4. Step 4: Simplify right side
   123.51x = 13,303.53
5. Step 5: Solve for x
   x = 13,303.53/123.51
6. Step 6: Final answer
   x = 107.71