Finding the Fourth Proportional to 258,535.28, 356,662.06 and 151,057

Step by Step Solution

1. Step 1: Write the proportion equation
   258,535.28 : 356,662.06 = 151,057 : x
2. Step 2: Convert to fraction form
   258,535.28/356,662.06 = 151,057/x
3. Step 3: Cross multiply
   258,535.28x = 356,662.06 × 151,057
4. Step 4: Simplify right side
   258,535.28x = 53,876,300,797.42
5. Step 5: Solve for x
   x = 53,876,300,797.42/258,535.28
6. Step 6: Final answer
   x = 208,390.52