Finding the Fourth Proportional to 278,467.72, 384,285.89 and 151,143.37

Step by Step Solution

1. Step 1: Write the proportion equation
   278,467.72 : 384,285.89 = 151,143.37 : x
2. Step 2: Convert to fraction form
   278,467.72/384,285.89 = 151,143.37/x
3. Step 3: Cross multiply
   278,467.72x = 384,285.89 × 151,143.37
4. Step 4: Simplify right side
   278,467.72x = 58,082,264,458.05
5. Step 5: Solve for x
   x = 58,082,264,458.05/278,467.72
6. Step 6: Final answer
   x = 208,578.09