Finding the Fourth Proportional to 269,456.78, 404,250.10 and 100,978.58

Step by Step Solution

1. Step 1: Write the proportion equation
   269,456.78 : 404,250.10 = 100,978.58 : x
2. Step 2: Convert to fraction form
   269,456.78/404,250.10 = 100,978.58/x
3. Step 3: Cross multiply
   269,456.78x = 404,250.10 × 100,978.58
4. Step 4: Simplify right side
   269,456.78x = 40,820,601,062.86
5. Step 5: Solve for x
   x = 40,820,601,062.86/269,456.78
6. Step 6: Final answer
   x = 151,492.20