Finding the Fourth Proportional to 290,499.25, 400,863.39 and 161,429.52

Step by Step Solution

1. Step 1: Write the proportion equation
   290,499.25 : 400,863.39 = 161,429.52 : x
2. Step 2: Convert to fraction form
   290,499.25/400,863.39 = 161,429.52/x
3. Step 3: Cross multiply
   290,499.25x = 400,863.39 × 161,429.52
4. Step 4: Simplify right side
   290,499.25x = 64,711,184,633.27
5. Step 5: Solve for x
   x = 64,711,184,633.27/290,499.25
6. Step 6: Final answer
   x = 222,758.53