Finding the Fourth Proportional to 57,003.68, 78,665.34 and 31,162.76

Step by Step Solution

1. Step 1: Write the proportion equation
   57,003.68 : 78,665.34 = 31,162.76 : x
2. Step 2: Convert to fraction form
   57,003.68/78,665.34 = 31,162.76/x
3. Step 3: Cross multiply
   57,003.68x = 78,665.34 × 31,162.76
4. Step 4: Simplify right side
   57,003.68x = 2,451,429,110.74
5. Step 5: Solve for x
   x = 2,451,429,110.74/57,003.68
6. Step 6: Final answer
   x = 43,004.75