Finding the Fourth Proportional to 57,227.72, 78,978.87 and 31,742.06

Step by Step Solution

1. Step 1: Write the proportion equation
   57,227.72 : 78,978.87 = 31,742.06 : x
2. Step 2: Convert to fraction form
   57,227.72/78,978.87 = 31,742.06/x
3. Step 3: Cross multiply
   57,227.72x = 78,978.87 × 31,742.06
4. Step 4: Simplify right side
   57,227.72x = 2,506,951,635.38
5. Step 5: Solve for x
   x = 2,506,951,635.38/57,227.72
6. Step 6: Final answer
   x = 43,806.60