Finding the Fourth Proportional to 57,235.78, 78,985.61 and 31,744.52

Step by Step Solution

1. Step 1: Write the proportion equation
   57,235.78 : 78,985.61 = 31,744.52 : x
2. Step 2: Convert to fraction form
   57,235.78/78,985.61 = 31,744.52/x
3. Step 3: Cross multiply
   57,235.78x = 78,985.61 × 31,744.52
4. Step 4: Simplify right side
   57,235.78x = 2,507,360,315.10
5. Step 5: Solve for x
   x = 2,507,360,315.10/57,235.78
6. Step 6: Final answer
   x = 43,807.57