Finding the Fourth Proportional to 85,243.72, 117,642.74 and 49,433.42

Step by Step Solution

1. Step 1: Write the proportion equation
   85,243.72 : 117,642.74 = 49,433.42 : x
2. Step 2: Convert to fraction form
   85,243.72/117,642.74 = 49,433.42/x
3. Step 3: Cross multiply
   85,243.72x = 117,642.74 × 49,433.42
4. Step 4: Simplify right side
   85,243.72x = 5,815,482,976.37
5. Step 5: Solve for x
   x = 5,815,482,976.37/85,243.72
6. Step 6: Final answer
   x = 68,221.83