Finding the Fourth Proportional to 50,821.47, 70,167.86 and 31,730.31

Step by Step Solution

1. Step 1: Write the proportion equation
   50,821.47 : 70,167.86 = 31,730.31 : x
2. Step 2: Convert to fraction form
   50,821.47/70,167.86 = 31,730.31/x
3. Step 3: Cross multiply
   50,821.47x = 70,167.86 × 31,730.31
4. Step 4: Simplify right side
   50,821.47x = 2,226,447,949.84
5. Step 5: Solve for x
   x = 2,226,447,949.84/50,821.47
6. Step 6: Final answer
   x = 43,809.20