Finding the Fourth Proportional to 81,130.98, 111,952.72 and 45,320.22

Step by Step Solution

1. Step 1: Write the proportion equation
   81,130.98 : 111,952.72 = 45,320.22 : x
2. Step 2: Convert to fraction form
   81,130.98/111,952.72 = 45,320.22/x
3. Step 3: Cross multiply
   81,130.98x = 111,952.72 × 45,320.22
4. Step 4: Simplify right side
   81,130.98x = 5,073,721,900.00
5. Step 5: Solve for x
   x = 5,073,721,900.00/81,130.98
6. Step 6: Final answer
   x = 62,537.42