Finding the Fourth Proportional to 31,064.82, 42,869.50 and 16,917.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,064.82 : 42,869.50 = 16,917.72 : x
2. Step 2: Convert to fraction form
   31,064.82/42,869.50 = 16,917.72/x
3. Step 3: Cross multiply
   31,064.82x = 42,869.50 × 16,917.72
4. Step 4: Simplify right side
   31,064.82x = 725,254,197.54
5. Step 5: Solve for x
   x = 725,254,197.54/31,064.82
6. Step 6: Final answer
   x = 23,346.48