Finding the Fourth Proportional to 388,096.35, 582,103.56 and 103,815.57

Step by Step Solution

1. Step 1: Write the proportion equation
   388,096.35 : 582,103.56 = 103,815.57 : x
2. Step 2: Convert to fraction form
   388,096.35/582,103.56 = 103,815.57/x
3. Step 3: Cross multiply
   388,096.35x = 582,103.56 × 103,815.57
4. Step 4: Simplify right side
   388,096.35x = 60,431,412,880.43
5. Step 5: Solve for x
   x = 60,431,412,880.43/388,096.35
6. Step 6: Final answer
   x = 155,712.40