Finding the Fourth Proportional to 338,978.52, 467,789.06 and 186,019.28

Step by Step Solution

1. Step 1: Write the proportion equation
   338,978.52 : 467,789.06 = 186,019.28 : x
2. Step 2: Convert to fraction form
   338,978.52/467,789.06 = 186,019.28/x
3. Step 3: Cross multiply
   338,978.52x = 467,789.06 × 186,019.28
4. Step 4: Simplify right side
   338,978.52x = 87,017,784,133.08
5. Step 5: Solve for x
   x = 87,017,784,133.08/338,978.52
6. Step 6: Final answer
   x = 256,705.89