Finding the Fourth Proportional to 608,912.82, 913,456.71 and 188,221.50

Step by Step Solution

1. Step 1: Write the proportion equation
   608,912.82 : 913,456.71 = 188,221.50 : x
2. Step 2: Convert to fraction form
   608,912.82/913,456.71 = 188,221.50/x
3. Step 3: Cross multiply
   608,912.82x = 913,456.71 × 188,221.50
4. Step 4: Simplify right side
   608,912.82x = 171,932,192,141.27
5. Step 5: Solve for x
   x = 171,932,192,141.27/608,912.82
6. Step 6: Final answer
   x = 282,359.29