Finding the Fourth Proportional to 405,429.39, 608,049.77 and 152,735.21

Step by Step Solution

1. Step 1: Write the proportion equation
   405,429.39 : 608,049.77 = 152,735.21 : x
2. Step 2: Convert to fraction form
   405,429.39/608,049.77 = 152,735.21/x
3. Step 3: Cross multiply
   405,429.39x = 608,049.77 × 152,735.21
4. Step 4: Simplify right side
   405,429.39x = 92,870,605,507.48
5. Step 5: Solve for x
   x = 92,870,605,507.48/405,429.39
6. Step 6: Final answer
   x = 229,067.27