Finding the Fourth Proportional to 206,870.06, 285,460.52 and 116,205.50

Step by Step Solution

1. Step 1: Write the proportion equation
   206,870.06 : 285,460.52 = 116,205.50 : x
2. Step 2: Convert to fraction form
   206,870.06/285,460.52 = 116,205.50/x
3. Step 3: Cross multiply
   206,870.06x = 285,460.52 × 116,205.50
4. Step 4: Simplify right side
   206,870.06x = 33,172,082,456.86
5. Step 5: Solve for x
   x = 33,172,082,456.86/206,870.06
6. Step 6: Final answer
   x = 160,352.26