Finding the Fourth Proportional to 81,066.12, 111,866.58 and 45,258.40

Step by Step Solution

1. Step 1: Write the proportion equation
   81,066.12 : 111,866.58 = 45,258.40 : x
2. Step 2: Convert to fraction form
   81,066.12/111,866.58 = 45,258.40/x
3. Step 3: Cross multiply
   81,066.12x = 111,866.58 × 45,258.40
4. Step 4: Simplify right side
   81,066.12x = 5,062,902,424.27
5. Step 5: Solve for x
   x = 5,062,902,424.27/81,066.12
6. Step 6: Final answer
   x = 62,453.99