Finding the Fourth Proportional to 72,233.55, 99,676.89 and 40,396.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,233.55 : 99,676.89 = 40,396.30 : x
2. Step 2: Convert to fraction form
   72,233.55/99,676.89 = 40,396.30/x
3. Step 3: Cross multiply
   72,233.55x = 99,676.89 × 40,396.30
4. Step 4: Simplify right side
   72,233.55x = 4,026,576,851.14
5. Step 5: Solve for x
   x = 4,026,576,851.14/72,233.55
6. Step 6: Final answer
   x = 55,743.86