Finding the Fourth Proportional to 31,715.57, 43,767.48 and 17,375.91

Step by Step Solution

1. Step 1: Write the proportion equation
   31,715.57 : 43,767.48 = 17,375.91 : x
2. Step 2: Convert to fraction form
   31,715.57/43,767.48 = 17,375.91/x
3. Step 3: Cross multiply
   31,715.57x = 43,767.48 × 17,375.91
4. Step 4: Simplify right side
   31,715.57x = 760,499,863.72
5. Step 5: Solve for x
   x = 760,499,863.72/31,715.57
6. Step 6: Final answer
   x = 23,978.75