Finding the Fourth Proportional to 72,287.82, 99,756.09 and 40,456.62

Step by Step Solution

1. Step 1: Write the proportion equation
   72,287.82 : 99,756.09 = 40,456.62 : x
2. Step 2: Convert to fraction form
   72,287.82/99,756.09 = 40,456.62/x
3. Step 3: Cross multiply
   72,287.82x = 99,756.09 × 40,456.62
4. Step 4: Simplify right side
   72,287.82x = 4,035,794,225.82
5. Step 5: Solve for x
   x = 4,035,794,225.82/72,287.82
6. Step 6: Final answer
   x = 55,829.52