Finding the Fourth Proportional to 31,066.99, 42,874.76 and 17,456.60

Step by Step Solution

1. Step 1: Write the proportion equation
   31,066.99 : 42,874.76 = 17,456.60 : x
2. Step 2: Convert to fraction form
   31,066.99/42,874.76 = 17,456.60/x
3. Step 3: Cross multiply
   31,066.99x = 42,874.76 × 17,456.60
4. Step 4: Simplify right side
   31,066.99x = 748,447,686.24
5. Step 5: Solve for x
   x = 748,447,686.24/31,066.99
6. Step 6: Final answer
   x = 24,091.41