Finding the Fourth Proportional to 57,357, 79,165.31 and 31,872.11

Step by Step Solution

1. Step 1: Write the proportion equation
   57,357 : 79,165.31 = 31,872.11 : x
2. Step 2: Convert to fraction form
   57,357/79,165.31 = 31,872.11/x
3. Step 3: Cross multiply
   57,357x = 79,165.31 × 31,872.11
4. Step 4: Simplify right side
   57,357x = 2,523,164,913.32
5. Step 5: Solve for x
   x = 2,523,164,913.32/57,357
6. Step 6: Final answer
   x = 43,990.53