Finding the Fourth Proportional to 42,309.20, 63,471 and 14,600.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,309.20 : 63,471 = 14,600.72 : x
2. Step 2: Convert to fraction form
   42,309.20/63,471 = 14,600.72/x
3. Step 3: Cross multiply
   42,309.20x = 63,471 × 14,600.72
4. Step 4: Simplify right side
   42,309.20x = 926,722,299.12
5. Step 5: Solve for x
   x = 926,722,299.12/42,309.20
6. Step 6: Final answer
   x = 21,903.56