Finding the Fourth Proportional to 388,662.76, 581,677.38 and 238,997.84

Step by Step Solution

1. Step 1: Write the proportion equation
   388,662.76 : 581,677.38 = 238,997.84 : x
2. Step 2: Convert to fraction form
   388,662.76/581,677.38 = 238,997.84/x
3. Step 3: Cross multiply
   388,662.76x = 581,677.38 × 238,997.84
4. Step 4: Simplify right side
   388,662.76x = 139,019,637,396.86
5. Step 5: Solve for x
   x = 139,019,637,396.86/388,662.76
6. Step 6: Final answer
   x = 357,687.05