Finding the Fourth Proportional to 81,101.27, 111,918.58 and 45,291.78

Step by Step Solution

1. Step 1: Write the proportion equation
   81,101.27 : 111,918.58 = 45,291.78 : x
2. Step 2: Convert to fraction form
   81,101.27/111,918.58 = 45,291.78/x
3. Step 3: Cross multiply
   81,101.27x = 111,918.58 × 45,291.78
4. Step 4: Simplify right side
   81,101.27x = 5,068,991,590.04
5. Step 5: Solve for x
   x = 5,068,991,590.04/81,101.27
6. Step 6: Final answer
   x = 62,502.00