Finding the Fourth Proportional to 57,222.87, 78,966.72 and 31,729.28

Step by Step Solution

1. Step 1: Write the proportion equation
   57,222.87 : 78,966.72 = 31,729.28 : x
2. Step 2: Convert to fraction form
   57,222.87/78,966.72 = 31,729.28/x
3. Step 3: Cross multiply
   57,222.87x = 78,966.72 × 31,729.28
4. Step 4: Simplify right side
   57,222.87x = 2,505,557,169.56
5. Step 5: Solve for x
   x = 2,505,557,169.56/57,222.87
6. Step 6: Final answer
   x = 43,785.94