Finding the Fourth Proportional to 42,443.72, 63,673.42 and 13,982.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,443.72 : 63,673.42 = 13,982.28 : x
2. Step 2: Convert to fraction form
   42,443.72/63,673.42 = 13,982.28/x
3. Step 3: Cross multiply
   42,443.72x = 63,673.42 × 13,982.28
4. Step 4: Simplify right side
   42,443.72x = 890,299,587.00
5. Step 5: Solve for x
   x = 890,299,587.00/42,443.72
6. Step 6: Final answer
   x = 20,976.00