Finding the Fourth Proportional to 326,404.21, 489,212.59 and 168,546.61

Step by Step Solution

1. Step 1: Write the proportion equation
   326,404.21 : 489,212.59 = 168,546.61 : x
2. Step 2: Convert to fraction form
   326,404.21/489,212.59 = 168,546.61/x
3. Step 3: Cross multiply
   326,404.21x = 489,212.59 × 168,546.61
4. Step 4: Simplify right side
   326,404.21x = 82,455,123,613.82
5. Step 5: Solve for x
   x = 82,455,123,613.82/326,404.21
6. Step 6: Final answer
   x = 252,616.61