Finding the Fourth Proportional to 30,736.24, 42,413.40 and 17,123.28

Step by Step Solution

1. Step 1: Write the proportion equation
   30,736.24 : 42,413.40 = 17,123.28 : x
2. Step 2: Convert to fraction form
   30,736.24/42,413.40 = 17,123.28/x
3. Step 3: Cross multiply
   30,736.24x = 42,413.40 × 17,123.28
4. Step 4: Simplify right side
   30,736.24x = 726,256,523.95
5. Step 5: Solve for x
   x = 726,256,523.95/30,736.24
6. Step 6: Final answer
   x = 23,628.67