Finding the Fourth Proportional to 72,291.48, 99,762.75 and 40,463.34

Step by Step Solution

1. Step 1: Write the proportion equation
   72,291.48 : 99,762.75 = 40,463.34 : x
2. Step 2: Convert to fraction form
   72,291.48/99,762.75 = 40,463.34/x
3. Step 3: Cross multiply
   72,291.48x = 99,762.75 × 40,463.34
4. Step 4: Simplify right side
   72,291.48x = 4,036,734,072.59
5. Step 5: Solve for x
   x = 4,036,734,072.59/72,291.48
6. Step 6: Final answer
   x = 55,839.69