Finding the Fourth Proportional to 262,429.72, 391,596.96 and 234,155.32

Step by Step Solution

1. Step 1: Write the proportion equation
   262,429.72 : 391,596.96 = 234,155.32 : x
2. Step 2: Convert to fraction form
   262,429.72/391,596.96 = 234,155.32/x
3. Step 3: Cross multiply
   262,429.72x = 391,596.96 × 234,155.32
4. Step 4: Simplify right side
   262,429.72x = 91,694,511,479.83
5. Step 5: Solve for x
   x = 91,694,511,479.83/262,429.72
6. Step 6: Final answer
   x = 349,405.97