Finding the Fourth Proportional to 57,141.88, 78,864.06 and 31,993

Step by Step Solution

1. Step 1: Write the proportion equation
   57,141.88 : 78,864.06 = 31,993 : x
2. Step 2: Convert to fraction form
   57,141.88/78,864.06 = 31,993/x
3. Step 3: Cross multiply
   57,141.88x = 78,864.06 × 31,993
4. Step 4: Simplify right side
   57,141.88x = 2,523,097,871.58
5. Step 5: Solve for x
   x = 2,523,097,871.58/57,141.88
6. Step 6: Final answer
   x = 44,154.97