Finding the Fourth Proportional to 200,616.96, 276,849.60 and 109,978.08

Step by Step Solution

1. Step 1: Write the proportion equation
   200,616.96 : 276,849.60 = 109,978.08 : x
2. Step 2: Convert to fraction form
   200,616.96/276,849.60 = 109,978.08/x
3. Step 3: Cross multiply
   200,616.96x = 276,849.60 × 109,978.08
4. Step 4: Simplify right side
   200,616.96x = 30,447,387,456.77
5. Step 5: Solve for x
   x = 30,447,387,456.77/200,616.96
6. Step 6: Final answer
   x = 151,768.76