Finding the Fourth Proportional to 288,155.25, 397,284.61 and 236,281.22

Step by Step Solution

1. Step 1: Write the proportion equation
   288,155.25 : 397,284.61 = 236,281.22 : x
2. Step 2: Convert to fraction form
   288,155.25/397,284.61 = 236,281.22/x
3. Step 3: Cross multiply
   288,155.25x = 397,284.61 × 236,281.22
4. Step 4: Simplify right side
   288,155.25x = 93,870,892,705.25
5. Step 5: Solve for x
   x = 93,870,892,705.25/288,155.25
6. Step 6: Final answer
   x = 325,764.99