Finding the Fourth Proportional to 31,061.81, 42,865.34 and 16,914.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,061.81 : 42,865.34 = 16,914.69 : x
2. Step 2: Convert to fraction form
   31,061.81/42,865.34 = 16,914.69/x
3. Step 3: Cross multiply
   31,061.81x = 42,865.34 × 16,914.69
4. Step 4: Simplify right side
   31,061.81x = 725,053,853.27
5. Step 5: Solve for x
   x = 725,053,853.27/31,061.81
6. Step 6: Final answer
   x = 23,342.29