Finding the Fourth Proportional to 260,789.33, 359,535.89 and 222,955.31

Step by Step Solution

1. Step 1: Write the proportion equation
   260,789.33 : 359,535.89 = 222,955.31 : x
2. Step 2: Convert to fraction form
   260,789.33/359,535.89 = 222,955.31/x
3. Step 3: Cross multiply
   260,789.33x = 359,535.89 × 222,955.31
4. Step 4: Simplify right side
   260,789.33x = 80,160,434,570.78
5. Step 5: Solve for x
   x = 80,160,434,570.78/260,789.33
6. Step 6: Final answer
   x = 307,376.21