Finding the Fourth Proportional to 72,401.46, 99,919.62 and 40,573.32

Step by Step Solution

1. Step 1: Write the proportion equation
   72,401.46 : 99,919.62 = 40,573.32 : x
2. Step 2: Convert to fraction form
   72,401.46/99,919.62 = 40,573.32/x
3. Step 3: Cross multiply
   72,401.46x = 99,919.62 × 40,573.32
4. Step 4: Simplify right side
   72,401.46x = 4,054,070,716.54
5. Step 5: Solve for x
   x = 4,054,070,716.54/72,401.46
6. Step 6: Final answer
   x = 55,994.32