Finding the Fourth Proportional to 325,314.82, 487,986.81 and 142,933.60

Step by Step Solution

1. Step 1: Write the proportion equation
   325,314.82 : 487,986.81 = 142,933.60 : x
2. Step 2: Convert to fraction form
   325,314.82/487,986.81 = 142,933.60/x
3. Step 3: Cross multiply
   325,314.82x = 487,986.81 × 142,933.60
4. Step 4: Simplify right side
   325,314.82x = 69,749,711,505.82
5. Step 5: Solve for x
   x = 69,749,711,505.82/325,314.82
6. Step 6: Final answer
   x = 214,406.81