Finding the Fourth Proportional to 206,894, 285,513.72 and 112,686

Step by Step Solution

1. Step 1: Write the proportion equation
   206,894 : 285,513.72 = 112,686 : x
2. Step 2: Convert to fraction form
   206,894/285,513.72 = 112,686/x
3. Step 3: Cross multiply
   206,894x = 285,513.72 × 112,686
4. Step 4: Simplify right side
   206,894x = 32,173,399,051.92
5. Step 5: Solve for x
   x = 32,173,399,051.92/206,894
6. Step 6: Final answer
   x = 155,506.68