Finding the Fourth Proportional to 282,359.09, 389,656.24 and 155,042.89

Step by Step Solution

1. Step 1: Write the proportion equation
   282,359.09 : 389,656.24 = 155,042.89 : x
2. Step 2: Convert to fraction form
   282,359.09/389,656.24 = 155,042.89/x
3. Step 3: Cross multiply
   282,359.09x = 389,656.24 × 155,042.89
4. Step 4: Simplify right side
   282,359.09x = 60,413,428,194.39
5. Step 5: Solve for x
   x = 60,413,428,194.39/282,359.09
6. Step 6: Final answer
   x = 213,959.56