Finding the Fourth Proportional to 72,353.49, 99,847.71 and 40,090.20

Step by Step Solution

1. Step 1: Write the proportion equation
   72,353.49 : 99,847.71 = 40,090.20 : x
2. Step 2: Convert to fraction form
   72,353.49/99,847.71 = 40,090.20/x
3. Step 3: Cross multiply
   72,353.49x = 99,847.71 × 40,090.20
4. Step 4: Simplify right side
   72,353.49x = 4,002,914,663.44
5. Step 5: Solve for x
   x = 4,002,914,663.44/72,353.49
6. Step 6: Final answer
   x = 55,324.42