Finding the Fourth Proportional to 31,147.94, 42,985.56 and 17,540.66

Step by Step Solution

1. Step 1: Write the proportion equation
   31,147.94 : 42,985.56 = 17,540.66 : x
2. Step 2: Convert to fraction form
   31,147.94/42,985.56 = 17,540.66/x
3. Step 3: Cross multiply
   31,147.94x = 42,985.56 × 17,540.66
4. Step 4: Simplify right side
   31,147.94x = 753,994,877.94
5. Step 5: Solve for x
   x = 753,994,877.94/31,147.94
6. Step 6: Final answer
   x = 24,206.90