Finding the Fourth Proportional to 123.72, 185.16 and 93.24

Step by Step Solution

1. Step 1: Write the proportion equation
   123.72 : 185.16 = 93.24 : x
2. Step 2: Convert to fraction form
   123.72/185.16 = 93.24/x
3. Step 3: Cross multiply
   123.72x = 185.16 × 93.24
4. Step 4: Simplify right side
   123.72x = 17,264.32
5. Step 5: Solve for x
   x = 17,264.32/123.72
6. Step 6: Final answer
   x = 139.54