Finding the Fourth Proportional to 340,439.58, 469,777.59 and 189,550.62

Step by Step Solution

1. Step 1: Write the proportion equation
   340,439.58 : 469,777.59 = 189,550.62 : x
2. Step 2: Convert to fraction form
   340,439.58/469,777.59 = 189,550.62/x
3. Step 3: Cross multiply
   340,439.58x = 469,777.59 × 189,550.62
4. Step 4: Simplify right side
   340,439.58x = 89,046,633,446.61
5. Step 5: Solve for x
   x = 89,046,633,446.61/340,439.58
6. Step 6: Final answer
   x = 261,563.69