Finding the Fourth Proportional to 42,105.62, 63,145.28 and 14,019.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,105.62 : 63,145.28 = 14,019.12 : x
2. Step 2: Convert to fraction form
   42,105.62/63,145.28 = 14,019.12/x
3. Step 3: Cross multiply
   42,105.62x = 63,145.28 × 14,019.12
4. Step 4: Simplify right side
   42,105.62x = 885,241,257.75
5. Step 5: Solve for x
   x = 885,241,257.75/42,105.62
6. Step 6: Final answer
   x = 21,024.30