Finding the Fourth Proportional to 57,109.59, 78,813.81 and 31,959.09

Step by Step Solution

1. Step 1: Write the proportion equation
   57,109.59 : 78,813.81 = 31,959.09 : x
2. Step 2: Convert to fraction form
   57,109.59/78,813.81 = 31,959.09/x
3. Step 3: Cross multiply
   57,109.59x = 78,813.81 × 31,959.09
4. Step 4: Simplify right side
   57,109.59x = 2,518,817,647.03
5. Step 5: Solve for x
   x = 2,518,817,647.03/57,109.59
6. Step 6: Final answer
   x = 44,104.99