Finding the Fourth Proportional to 30,620.34, 42,258.51 and 17,192.48

Step by Step Solution

1. Step 1: Write the proportion equation
   30,620.34 : 42,258.51 = 17,192.48 : x
2. Step 2: Convert to fraction form
   30,620.34/42,258.51 = 17,192.48/x
3. Step 3: Cross multiply
   30,620.34x = 42,258.51 × 17,192.48
4. Step 4: Simplify right side
   30,620.34x = 726,528,376.71
5. Step 5: Solve for x
   x = 726,528,376.71/30,620.34
6. Step 6: Final answer
   x = 23,726.99