Finding the Fourth Proportional to 35,673.72, 49,119.82 and 31,687.91

Step by Step Solution

1. Step 1: Write the proportion equation
   35,673.72 : 49,119.82 = 31,687.91 : x
2. Step 2: Convert to fraction form
   35,673.72/49,119.82 = 31,687.91/x
3. Step 3: Cross multiply
   35,673.72x = 49,119.82 × 31,687.91
4. Step 4: Simplify right side
   35,673.72x = 1,556,504,294.76
5. Step 5: Solve for x
   x = 1,556,504,294.76/35,673.72
6. Step 6: Final answer
   x = 43,631.68