Finding the Fourth Proportional to 31,811.16, 43,900.74 and 17,665.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,811.16 : 43,900.74 = 17,665.32 : x
2. Step 2: Convert to fraction form
   31,811.16/43,900.74 = 17,665.32/x
3. Step 3: Cross multiply
   31,811.16x = 43,900.74 × 17,665.32
4. Step 4: Simplify right side
   31,811.16x = 775,520,620.34
5. Step 5: Solve for x
   x = 775,520,620.34/31,811.16
6. Step 6: Final answer
   x = 24,378.89