Finding the Fourth Proportional to 57,057.01, 78,732.58 and 31,559.31

Step by Step Solution

1. Step 1: Write the proportion equation
   57,057.01 : 78,732.58 = 31,559.31 : x
2. Step 2: Convert to fraction form
   57,057.01/78,732.58 = 31,559.31/x
3. Step 3: Cross multiply
   57,057.01x = 78,732.58 × 31,559.31
4. Step 4: Simplify right side
   57,057.01x = 2,484,745,899.32
5. Step 5: Solve for x
   x = 2,484,745,899.32/57,057.01
6. Step 6: Final answer
   x = 43,548.48