Finding the Fourth Proportional to 31,093.27, 42,909.87 and 17,666.79

Step by Step Solution

1. Step 1: Write the proportion equation
   31,093.27 : 42,909.87 = 17,666.79 : x
2. Step 2: Convert to fraction form
   31,093.27/42,909.87 = 17,666.79/x
3. Step 3: Cross multiply
   31,093.27x = 42,909.87 × 17,666.79
4. Step 4: Simplify right side
   31,093.27x = 758,079,740.32
5. Step 5: Solve for x
   x = 758,079,740.32/31,093.27
6. Step 6: Final answer
   x = 24,380.83