Finding the Fourth Proportional to 198,826, 274,379.88 and 109,402

Step by Step Solution

1. Step 1: Write the proportion equation
   198,826 : 274,379.88 = 109,402 : x
2. Step 2: Convert to fraction form
   198,826/274,379.88 = 109,402/x
3. Step 3: Cross multiply
   198,826x = 274,379.88 × 109,402
4. Step 4: Simplify right side
   198,826x = 30,017,707,631.76
5. Step 5: Solve for x
   x = 30,017,707,631.76/198,826
6. Step 6: Final answer
   x = 150,974.76