Finding the Fourth Proportional to 123.94, 185.95 and 72.60

Step by Step Solution

1. Step 1: Write the proportion equation
   123.94 : 185.95 = 72.60 : x
2. Step 2: Convert to fraction form
   123.94/185.95 = 72.60/x
3. Step 3: Cross multiply
   123.94x = 185.95 × 72.60
4. Step 4: Simplify right side
   123.94x = 13,500.52
5. Step 5: Solve for x
   x = 13,500.52/123.94
6. Step 6: Final answer
   x = 108.93