Finding the Fourth Proportional to 30,620.09, 42,258.17 and 17,192.23

Step by Step Solution

1. Step 1: Write the proportion equation
   30,620.09 : 42,258.17 = 17,192.23 : x
2. Step 2: Convert to fraction form
   30,620.09/42,258.17 = 17,192.23/x
3. Step 3: Cross multiply
   30,620.09x = 42,258.17 × 17,192.23
4. Step 4: Simplify right side
   30,620.09x = 726,512,178.02
5. Step 5: Solve for x
   x = 726,512,178.02/30,620.09
6. Step 6: Final answer
   x = 23,726.65