Finding the Fourth Proportional to 72,499.48, 100,042.56 and 40,662.22

Step by Step Solution

1. Step 1: Write the proportion equation
   72,499.48 : 100,042.56 = 40,662.22 : x
2. Step 2: Convert to fraction form
   72,499.48/100,042.56 = 40,662.22/x
3. Step 3: Cross multiply
   72,499.48x = 100,042.56 × 40,662.22
4. Step 4: Simplify right side
   72,499.48x = 4,067,952,584.08
5. Step 5: Solve for x
   x = 4,067,952,584.08/72,499.48
6. Step 6: Final answer
   x = 56,110.09