Finding the Fourth Proportional to 57,123.05, 78,829.89 and 31,281.48

Step by Step Solution

1. Step 1: Write the proportion equation
   57,123.05 : 78,829.89 = 31,281.48 : x
2. Step 2: Convert to fraction form
   57,123.05/78,829.89 = 31,281.48/x
3. Step 3: Cross multiply
   57,123.05x = 78,829.89 × 31,281.48
4. Step 4: Simplify right side
   57,123.05x = 2,465,915,627.44
5. Step 5: Solve for x
   x = 2,465,915,627.44/57,123.05
6. Step 6: Final answer
   x = 43,168.49