Finding the Fourth Proportional to 383,085.69, 528,658.22 and 222,034.15

Step by Step Solution

1. Step 1: Write the proportion equation
   383,085.69 : 528,658.22 = 222,034.15 : x
2. Step 2: Convert to fraction form
   383,085.69/528,658.22 = 222,034.15/x
3. Step 3: Cross multiply
   383,085.69x = 528,658.22 × 222,034.15
4. Step 4: Simplify right side
   383,085.69x = 117,380,181,161.49
5. Step 5: Solve for x
   x = 117,380,181,161.49/383,085.69
6. Step 6: Final answer
   x = 306,407.12