Finding the Fourth Proportional to 31,064.35, 42,869.30 and 16,917.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,064.35 : 42,869.30 = 16,917.18 : x
2. Step 2: Convert to fraction form
   31,064.35/42,869.30 = 16,917.18/x
3. Step 3: Cross multiply
   31,064.35x = 42,869.30 × 16,917.18
4. Step 4: Simplify right side
   31,064.35x = 725,227,664.57
5. Step 5: Solve for x
   x = 725,227,664.57/31,064.35
6. Step 6: Final answer
   x = 23,345.98