Finding the Fourth Proportional to 31,060.97, 42,864.59 and 16,913.81

Step by Step Solution

1. Step 1: Write the proportion equation
   31,060.97 : 42,864.59 = 16,913.81 : x
2. Step 2: Convert to fraction form
   31,060.97/42,864.59 = 16,913.81/x
3. Step 3: Cross multiply
   31,060.97x = 42,864.59 × 16,913.81
4. Step 4: Simplify right side
   31,060.97x = 725,003,680.43
5. Step 5: Solve for x
   x = 725,003,680.43/31,060.97
6. Step 6: Final answer
   x = 23,341.31