Finding the Fourth Proportional to 57,960.86, 86,973.59 and 31,306.31

Step by Step Solution

1. Step 1: Write the proportion equation
   57,960.86 : 86,973.59 = 31,306.31 : x
2. Step 2: Convert to fraction form
   57,960.86/86,973.59 = 31,306.31/x
3. Step 3: Cross multiply
   57,960.86x = 86,973.59 × 31,306.31
4. Step 4: Simplify right side
   57,960.86x = 2,722,821,578.95
5. Step 5: Solve for x
   x = 2,722,821,578.95/57,960.86
6. Step 6: Final answer
   x = 46,976.90