Finding the Fourth Proportional to 72,028.58, 99,401.92 and 40,203.41

Step by Step Solution

1. Step 1: Write the proportion equation
   72,028.58 : 99,401.92 = 40,203.41 : x
2. Step 2: Convert to fraction form
   72,028.58/99,401.92 = 40,203.41/x
3. Step 3: Cross multiply
   72,028.58x = 99,401.92 × 40,203.41
4. Step 4: Simplify right side
   72,028.58x = 3,996,295,547.03
5. Step 5: Solve for x
   x = 3,996,295,547.03/72,028.58
6. Step 6: Final answer
   x = 55,482.09