Finding the Fourth Proportional to 198,903, 274,486.15 and 109,479

Step by Step Solution

1. Step 1: Write the proportion equation
   198,903 : 274,486.15 = 109,479 : x
2. Step 2: Convert to fraction form
   198,903/274,486.15 = 109,479/x
3. Step 3: Cross multiply
   198,903x = 274,486.15 × 109,479
4. Step 4: Simplify right side
   198,903x = 30,050,469,215.85
5. Step 5: Solve for x
   x = 30,050,469,215.85/198,903
6. Step 6: Final answer
   x = 151,081.03