Finding the Fourth Proportional to 497,499.30, 686,551.37 and 282,651.17

Step by Step Solution

1. Step 1: Write the proportion equation
   497,499.30 : 686,551.37 = 282,651.17 : x
2. Step 2: Convert to fraction form
   497,499.30/686,551.37 = 282,651.17/x
3. Step 3: Cross multiply
   497,499.30x = 686,551.37 × 282,651.17
4. Step 4: Simplify right side
   497,499.30x = 194,054,543,149.59
5. Step 5: Solve for x
   x = 194,054,543,149.59/497,499.30
6. Step 6: Final answer
   x = 390,059.93