Finding the Fourth Proportional to 57,022.08, 78,690.72 and 31,530.24

Step by Step Solution

1. Step 1: Write the proportion equation
   57,022.08 : 78,690.72 = 31,530.24 : x
2. Step 2: Convert to fraction form
   57,022.08/78,690.72 = 31,530.24/x
3. Step 3: Cross multiply
   57,022.08x = 78,690.72 × 31,530.24
4. Step 4: Simplify right side
   57,022.08x = 2,481,137,287.37
5. Step 5: Solve for x
   x = 2,481,137,287.37/57,022.08
6. Step 6: Final answer
   x = 43,511.87