Finding the Fourth Proportional to 81,007.02, 111,789.74 and 45,197.05

Step by Step Solution

1. Step 1: Write the proportion equation
   81,007.02 : 111,789.74 = 45,197.05 : x
2. Step 2: Convert to fraction form
   81,007.02/111,789.74 = 45,197.05/x
3. Step 3: Cross multiply
   81,007.02x = 111,789.74 × 45,197.05
4. Step 4: Simplify right side
   81,007.02x = 5,052,566,468.27
5. Step 5: Solve for x
   x = 5,052,566,468.27/81,007.02
6. Step 6: Final answer
   x = 62,371.96