Finding the Fourth Proportional to 31,066.56, 42,871.14 and 16,919.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,066.56 : 42,871.14 = 16,919.10 : x
2. Step 2: Convert to fraction form
   31,066.56/42,871.14 = 16,919.10/x
3. Step 3: Cross multiply
   31,066.56x = 42,871.14 × 16,919.10
4. Step 4: Simplify right side
   31,066.56x = 725,341,104.77
5. Step 5: Solve for x
   x = 725,341,104.77/31,066.56
6. Step 6: Final answer
   x = 23,347.97