Finding the Fourth Proportional to 320,866.52, 442,912.60 and 186,730.52

Step by Step Solution

1. Step 1: Write the proportion equation
   320,866.52 : 442,912.60 = 186,730.52 : x
2. Step 2: Convert to fraction form
   320,866.52/442,912.60 = 186,730.52/x
3. Step 3: Cross multiply
   320,866.52x = 442,912.60 × 186,730.52
4. Step 4: Simplify right side
   320,866.52x = 82,705,300,112.55
5. Step 5: Solve for x
   x = 82,705,300,112.55/320,866.52
6. Step 6: Final answer
   x = 257,756.09