Finding the Fourth Proportional to 31,011.34, 42,795.81 and 16,864.19

Step by Step Solution

1. Step 1: Write the proportion equation
   31,011.34 : 42,795.81 = 16,864.19 : x
2. Step 2: Convert to fraction form
   31,011.34/42,795.81 = 16,864.19/x
3. Step 3: Cross multiply
   31,011.34x = 42,795.81 × 16,864.19
4. Step 4: Simplify right side
   31,011.34x = 721,716,671.04
5. Step 5: Solve for x
   x = 721,716,671.04/31,011.34
6. Step 6: Final answer
   x = 23,272.67