Finding the Fourth Proportional to 42,022.72, 63,035.52 and 14,320

Step by Step Solution

1. Step 1: Write the proportion equation
   42,022.72 : 63,035.52 = 14,320 : x
2. Step 2: Convert to fraction form
   42,022.72/63,035.52 = 14,320/x
3. Step 3: Cross multiply
   42,022.72x = 63,035.52 × 14,320
4. Step 4: Simplify right side
   42,022.72x = 902,668,646.40
5. Step 5: Solve for x
   x = 902,668,646.40/42,022.72
6. Step 6: Final answer
   x = 21,480.49