Finding the Fourth Proportional to 33,783.25, 50,674.47 and 31,728.09

Step by Step Solution

1. Step 1: Write the proportion equation
   33,783.25 : 50,674.47 = 31,728.09 : x
2. Step 2: Convert to fraction form
   33,783.25/50,674.47 = 31,728.09/x
3. Step 3: Cross multiply
   33,783.25x = 50,674.47 × 31,728.09
4. Step 4: Simplify right side
   33,783.25x = 1,607,804,144.86
5. Step 5: Solve for x
   x = 1,607,804,144.86/33,783.25
6. Step 6: Final answer
   x = 47,591.75