Finding the Fourth Proportional to 31,031.48, 42,823.77 and 16,884.34

Step by Step Solution

1. Step 1: Write the proportion equation
   31,031.48 : 42,823.77 = 16,884.34 : x
2. Step 2: Convert to fraction form
   31,031.48/42,823.77 = 16,884.34/x
3. Step 3: Cross multiply
   31,031.48x = 42,823.77 × 16,884.34
4. Step 4: Simplify right side
   31,031.48x = 723,051,092.76
5. Step 5: Solve for x
   x = 723,051,092.76/31,031.48
6. Step 6: Final answer
   x = 23,300.57