Finding the Fourth Proportional to 57,078.81, 78,768.83 and 31,586.24

Step by Step Solution

1. Step 1: Write the proportion equation
   57,078.81 : 78,768.83 = 31,586.24 : x
2. Step 2: Convert to fraction form
   57,078.81/78,768.83 = 31,586.24/x
3. Step 3: Cross multiply
   57,078.81x = 78,768.83 × 31,586.24
4. Step 4: Simplify right side
   57,078.81x = 2,488,011,444.79
5. Step 5: Solve for x
   x = 2,488,011,444.79/57,078.81
6. Step 6: Final answer
   x = 43,589.06