Finding the Fourth Proportional to 31,031.82, 42,824.01 and 16,884.68

Step by Step Solution

1. Step 1: Write the proportion equation
   31,031.82 : 42,824.01 = 16,884.68 : x
2. Step 2: Convert to fraction form
   31,031.82/42,824.01 = 16,884.68/x
3. Step 3: Cross multiply
   31,031.82x = 42,824.01 × 16,884.68
4. Step 4: Simplify right side
   31,031.82x = 723,069,491.05
5. Step 5: Solve for x
   x = 723,069,491.05/31,031.82
6. Step 6: Final answer
   x = 23,300.91