Finding the Fourth Proportional to 33,142.71, 49,689.23 and 19,992

Step by Step Solution

1. Step 1: Write the proportion equation
   33,142.71 : 49,689.23 = 19,992 : x
2. Step 2: Convert to fraction form
   33,142.71/49,689.23 = 19,992/x
3. Step 3: Cross multiply
   33,142.71x = 49,689.23 × 19,992
4. Step 4: Simplify right side
   33,142.71x = 993,387,086.16
5. Step 5: Solve for x
   x = 993,387,086.16/33,142.71
6. Step 6: Final answer
   x = 29,973.02