Finding the Fourth Proportional to 30,904.85, 42,649.52 and 17,478.09

Step by Step Solution

1. Step 1: Write the proportion equation
   30,904.85 : 42,649.52 = 17,478.09 : x
2. Step 2: Convert to fraction form
   30,904.85/42,649.52 = 17,478.09/x
3. Step 3: Cross multiply
   30,904.85x = 42,649.52 × 17,478.09
4. Step 4: Simplify right side
   30,904.85x = 745,432,061.63
5. Step 5: Solve for x
   x = 745,432,061.63/30,904.85
6. Step 6: Final answer
   x = 24,120.23