Finding the Fourth Proportional to 30,519.56, 42,116.28 and 17,945.12

Step by Step Solution

1. Step 1: Write the proportion equation
   30,519.56 : 42,116.28 = 17,945.12 : x
2. Step 2: Convert to fraction form
   30,519.56/42,116.28 = 17,945.12/x
3. Step 3: Cross multiply
   30,519.56x = 42,116.28 × 17,945.12
4. Step 4: Simplify right side
   30,519.56x = 755,781,698.55
5. Step 5: Solve for x
   x = 755,781,698.55/30,519.56
6. Step 6: Final answer
   x = 24,763.85