Finding the Fourth Proportional to 30,847.04, 42,569.78 and 17,420.31

Step by Step Solution

1. Step 1: Write the proportion equation
   30,847.04 : 42,569.78 = 17,420.31 : x
2. Step 2: Convert to fraction form
   30,847.04/42,569.78 = 17,420.31/x
3. Step 3: Cross multiply
   30,847.04x = 42,569.78 × 17,420.31
4. Step 4: Simplify right side
   30,847.04x = 741,578,806.43
5. Step 5: Solve for x
   x = 741,578,806.43/30,847.04
6. Step 6: Final answer
   x = 24,040.52