Finding the Fourth Proportional to 572,086.16, 857,796.94 and 216,906.42

Step by Step Solution

1. Step 1: Write the proportion equation
   572,086.16 : 857,796.94 = 216,906.42 : x
2. Step 2: Convert to fraction form
   572,086.16/857,796.94 = 216,906.42/x
3. Step 3: Cross multiply
   572,086.16x = 857,796.94 × 216,906.42
4. Step 4: Simplify right side
   572,086.16x = 186,061,665,610.13
5. Step 5: Solve for x
   x = 186,061,665,610.13/572,086.16
6. Step 6: Final answer
   x = 325,233.64