Finding the Fourth Proportional to 30,904.88, 42,649.76 and 17,478.32

Step by Step Solution

1. Step 1: Write the proportion equation
   30,904.88 : 42,649.76 = 17,478.32 : x
2. Step 2: Convert to fraction form
   30,904.88/42,649.76 = 17,478.32/x
3. Step 3: Cross multiply
   30,904.88x = 42,649.76 × 17,478.32
4. Step 4: Simplify right side
   30,904.88x = 745,446,303.52
5. Step 5: Solve for x
   x = 745,446,303.52/30,904.88
6. Step 6: Final answer
   x = 24,120.66