Finding the Fourth Proportional to 695,022, 959,123.88 and 393,216

Step by Step Solution

1. Step 1: Write the proportion equation
   695,022 : 959,123.88 = 393,216 : x
2. Step 2: Convert to fraction form
   695,022/959,123.88 = 393,216/x
3. Step 3: Cross multiply
   695,022x = 959,123.88 × 393,216
4. Step 4: Simplify right side
   695,022x = 377,142,855,598.08
5. Step 5: Solve for x
   x = 377,142,855,598.08/695,022
6. Step 6: Final answer
   x = 542,634.41