Finding the Fourth Proportional to 57,285, 79,046.82 and 31,790.52

Step by Step Solution

1. Step 1: Write the proportion equation
   57,285 : 79,046.82 = 31,790.52 : x
2. Step 2: Convert to fraction form
   57,285/79,046.82 = 31,790.52/x
3. Step 3: Cross multiply
   57,285x = 79,046.82 × 31,790.52
4. Step 4: Simplify right side
   57,285x = 2,512,939,512.15
5. Step 5: Solve for x
   x = 2,512,939,512.15/57,285
6. Step 6: Final answer
   x = 43,867.32