Finding the Fourth Proportional to 81,057.98, 111,871.26 and 45,250.31

Step by Step Solution

1. Step 1: Write the proportion equation
   81,057.98 : 111,871.26 = 45,250.31 : x
2. Step 2: Convert to fraction form
   81,057.98/111,871.26 = 45,250.31/x
3. Step 3: Cross multiply
   81,057.98x = 111,871.26 × 45,250.31
4. Step 4: Simplify right side
   81,057.98x = 5,062,209,474.77
5. Step 5: Solve for x
   x = 5,062,209,474.77/81,057.98
6. Step 6: Final answer
   x = 62,451.71