Finding the Fourth Proportional to 103,196.87, 154,795.47 and 28,318.04

Step by Step Solution

1. Step 1: Write the proportion equation
   103,196.87 : 154,795.47 = 28,318.04 : x
2. Step 2: Convert to fraction form
   103,196.87/154,795.47 = 28,318.04/x
3. Step 3: Cross multiply
   103,196.87x = 154,795.47 × 28,318.04
4. Step 4: Simplify right side
   103,196.87x = 4,383,504,311.28
5. Step 5: Solve for x
   x = 4,383,504,311.28/103,196.87
6. Step 6: Final answer
   x = 42,477.11