Finding the Fourth Proportional to 383,062.82, 528,626.39 and 210,981.96

Step by Step Solution

1. Step 1: Write the proportion equation
   383,062.82 : 528,626.39 = 210,981.96 : x
2. Step 2: Convert to fraction form
   383,062.82/528,626.39 = 210,981.96/x
3. Step 3: Cross multiply
   383,062.82x = 528,626.39 × 210,981.96
4. Step 4: Simplify right side
   383,062.82x = 111,530,630,815.02
5. Step 5: Solve for x
   x = 111,530,630,815.02/383,062.82
6. Step 6: Final answer
   x = 291,154.94