Finding the Fourth Proportional to 382,308.54, 527,525.91 and 221,150.94

Step by Step Solution

1. Step 1: Write the proportion equation
   382,308.54 : 527,525.91 = 221,150.94 : x
2. Step 2: Convert to fraction form
   382,308.54/527,525.91 = 221,150.94/x
3. Step 3: Cross multiply
   382,308.54x = 527,525.91 × 221,150.94
4. Step 4: Simplify right side
   382,308.54x = 116,662,850,870.86
5. Step 5: Solve for x
   x = 116,662,850,870.86/382,308.54
6. Step 6: Final answer
   x = 305,153.66