Finding the Fourth Proportional to 690,685, 1,036,086.18 and 192,049

Step by Step Solution

1. Step 1: Write the proportion equation
   690,685 : 1,036,086.18 = 192,049 : x
2. Step 2: Convert to fraction form
   690,685/1,036,086.18 = 192,049/x
3. Step 3: Cross multiply
   690,685x = 1,036,086.18 × 192,049
4. Step 4: Simplify right side
   690,685x = 198,979,314,782.82
5. Step 5: Solve for x
   x = 198,979,314,782.82/690,685
6. Step 6: Final answer
   x = 288,089.82