Finding the Fourth Proportional to 33,321.20, 49,978.71 and 20,672.98

Step by Step Solution

1. Step 1: Write the proportion equation
   33,321.20 : 49,978.71 = 20,672.98 : x
2. Step 2: Convert to fraction form
   33,321.20/49,978.71 = 20,672.98/x
3. Step 3: Cross multiply
   33,321.20x = 49,978.71 × 20,672.98
4. Step 4: Simplify right side
   33,321.20x = 1,033,208,747.31
5. Step 5: Solve for x
   x = 1,033,208,747.31/33,321.20
6. Step 6: Final answer
   x = 31,007.55