Finding the Fourth Proportional to 309,401.89, 464,103.24 and 84,764.30

Step by Step Solution

1. Step 1: Write the proportion equation
   309,401.89 : 464,103.24 = 84,764.30 : x
2. Step 2: Convert to fraction form
   309,401.89/464,103.24 = 84,764.30/x
3. Step 3: Cross multiply
   309,401.89x = 464,103.24 × 84,764.30
4. Step 4: Simplify right side
   309,401.89x = 39,339,386,266.33
5. Step 5: Solve for x
   x = 39,339,386,266.33/309,401.89
6. Step 6: Final answer
   x = 127,146.56