Finding the Fourth Proportional to 340,962.89, 470,336.22 and 213,417.05

Step by Step Solution

1. Step 1: Write the proportion equation
   340,962.89 : 470,336.22 = 213,417.05 : x
2. Step 2: Convert to fraction form
   340,962.89/470,336.22 = 213,417.05/x
3. Step 3: Cross multiply
   340,962.89x = 470,336.22 × 213,417.05
4. Step 4: Simplify right side
   340,962.89x = 100,377,766,228.87
5. Step 5: Solve for x
   x = 100,377,766,228.87/340,962.89
6. Step 6: Final answer
   x = 294,394.99