Finding the Fourth Proportional to 42,109.29, 63,145.91 and 14,021.73

Step by Step Solution

1. Step 1: Write the proportion equation
   42,109.29 : 63,145.91 = 14,021.73 : x
2. Step 2: Convert to fraction form
   42,109.29/63,145.91 = 14,021.73/x
3. Step 3: Cross multiply
   42,109.29x = 63,145.91 × 14,021.73
4. Step 4: Simplify right side
   42,109.29x = 885,414,935.68
5. Step 5: Solve for x
   x = 885,414,935.68/42,109.29
6. Step 6: Final answer
   x = 21,026.59