Finding the Fourth Proportional to 85,244.72, 117,644.12 and 49,434.42

Step by Step Solution

1. Step 1: Write the proportion equation
   85,244.72 : 117,644.12 = 49,434.42 : x
2. Step 2: Convert to fraction form
   85,244.72/117,644.12 = 49,434.42/x
3. Step 3: Cross multiply
   85,244.72x = 117,644.12 × 49,434.42
4. Step 4: Simplify right side
   85,244.72x = 5,815,668,838.61
5. Step 5: Solve for x
   x = 5,815,668,838.61/85,244.72
6. Step 6: Final answer
   x = 68,223.21