Finding the Fourth Proportional to 57,223.71, 78,967.31 and 31,730.18

Step by Step Solution

1. Step 1: Write the proportion equation
   57,223.71 : 78,967.31 = 31,730.18 : x
2. Step 2: Convert to fraction form
   57,223.71/78,967.31 = 31,730.18/x
3. Step 3: Cross multiply
   57,223.71x = 78,967.31 × 31,730.18
4. Step 4: Simplify right side
   57,223.71x = 2,505,646,406.93
5. Step 5: Solve for x
   x = 2,505,646,406.93/57,223.71
6. Step 6: Final answer
   x = 43,786.86