Finding the Fourth Proportional to 57,109.56, 78,811.29 and 31,959.06

Step by Step Solution

1. Step 1: Write the proportion equation
   57,109.56 : 78,811.29 = 31,959.06 : x
2. Step 2: Convert to fraction form
   57,109.56/78,811.29 = 31,959.06/x
3. Step 3: Cross multiply
   57,109.56x = 78,811.29 × 31,959.06
4. Step 4: Simplify right side
   57,109.56x = 2,518,734,745.79
5. Step 5: Solve for x
   x = 2,518,734,745.79/57,109.56
6. Step 6: Final answer
   x = 44,103.56