Finding the Fourth Proportional to 57,017.50, 78,686.58 and 31,867

Step by Step Solution

1. Step 1: Write the proportion equation
   57,017.50 : 78,686.58 = 31,867 : x
2. Step 2: Convert to fraction form
   57,017.50/78,686.58 = 31,867/x
3. Step 3: Cross multiply
   57,017.50x = 78,686.58 × 31,867
4. Step 4: Simplify right side
   57,017.50x = 2,507,505,244.86
5. Step 5: Solve for x
   x = 2,507,505,244.86/57,017.50
6. Step 6: Final answer
   x = 43,977.82