Finding the Fourth Proportional to 57,356.45, 79,164.56 and 31,871.57

Step by Step Solution

1. Step 1: Write the proportion equation
   57,356.45 : 79,164.56 = 31,871.57 : x
2. Step 2: Convert to fraction form
   57,356.45/79,164.56 = 31,871.57/x
3. Step 3: Cross multiply
   57,356.45x = 79,164.56 × 31,871.57
4. Step 4: Simplify right side
   57,356.45x = 2,523,098,815.56
5. Step 5: Solve for x
   x = 2,523,098,815.56/57,356.45
6. Step 6: Final answer
   x = 43,989.80