Finding the Fourth Proportional to 403,423.43, 605,200.77 and 119,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   403,423.43 : 605,200.77 = 119,142.72 : x
2. Step 2: Convert to fraction form
   403,423.43/605,200.77 = 119,142.72/x
3. Step 3: Cross multiply
   403,423.43x = 605,200.77 × 119,142.72
4. Step 4: Simplify right side
   403,423.43x = 72,105,265,883.89
5. Step 5: Solve for x
   x = 72,105,265,883.89/403,423.43
6. Step 6: Final answer
   x = 178,733.46