Finding the Fourth Proportional to 57,047.40, 78,723.72 and 31,896.84

Step by Step Solution

1. Step 1: Write the proportion equation
   57,047.40 : 78,723.72 = 31,896.84 : x
2. Step 2: Convert to fraction form
   57,047.40/78,723.72 = 31,896.84/x
3. Step 3: Cross multiply
   57,047.40x = 78,723.72 × 31,896.84
4. Step 4: Simplify right side
   57,047.40x = 2,511,037,901.04
5. Step 5: Solve for x
   x = 2,511,037,901.04/57,047.40
6. Step 6: Final answer
   x = 44,016.69