Finding the Fourth Proportional to 42,108.54, 63,144.78 and 14,020.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42,108.54 : 63,144.78 = 14,020.98 : x
2. Step 2: Convert to fraction form
   42,108.54/63,144.78 = 14,020.98/x
3. Step 3: Cross multiply
   42,108.54x = 63,144.78 × 14,020.98
4. Step 4: Simplify right side
   42,108.54x = 885,351,697.48
5. Step 5: Solve for x
   x = 885,351,697.48/42,108.54
6. Step 6: Final answer
   x = 21,025.47