Finding the Fourth Proportional to 30,903.94, 42,648.28 and 17,477.20

Step by Step Solution

1. Step 1: Write the proportion equation
   30,903.94 : 42,648.28 = 17,477.20 : x
2. Step 2: Convert to fraction form
   30,903.94/42,648.28 = 17,477.20/x
3. Step 3: Cross multiply
   30,903.94x = 42,648.28 × 17,477.20
4. Step 4: Simplify right side
   30,903.94x = 745,372,608.80
5. Step 5: Solve for x
   x = 745,372,608.80/30,903.94
6. Step 6: Final answer
   x = 24,119.01