Finding the Fourth Proportional to 57,744.10, 86,689.05 and 31,111.30

Step by Step Solution

1. Step 1: Write the proportion equation
   57,744.10 : 86,689.05 = 31,111.30 : x
2. Step 2: Convert to fraction form
   57,744.10/86,689.05 = 31,111.30/x
3. Step 3: Cross multiply
   57,744.10x = 86,689.05 × 31,111.30
4. Step 4: Simplify right side
   57,744.10x = 2,697,009,041.27
5. Step 5: Solve for x
   x = 2,697,009,041.27/57,744.10
6. Step 6: Final answer
   x = 46,706.23