Finding the Fourth Proportional to 87,832.16, 131,721.01 and 31,665

Step by Step Solution

1. Step 1: Write the proportion equation
   87,832.16 : 131,721.01 = 31,665 : x
2. Step 2: Convert to fraction form
   87,832.16/131,721.01 = 31,665/x
3. Step 3: Cross multiply
   87,832.16x = 131,721.01 × 31,665
4. Step 4: Simplify right side
   87,832.16x = 4,170,945,781.65
5. Step 5: Solve for x
   x = 4,170,945,781.65/87,832.16
6. Step 6: Final answer
   x = 47,487.68