Finding the Fourth Proportional to 31,031.61, 42,823.56 and 16,884.37

Step by Step Solution

1. Step 1: Write the proportion equation
   31,031.61 : 42,823.56 = 16,884.37 : x
2. Step 2: Convert to fraction form
   31,031.61/42,823.56 = 16,884.37/x
3. Step 3: Cross multiply
   31,031.61x = 42,823.56 × 16,884.37
4. Step 4: Simplify right side
   31,031.61x = 723,048,831.76
5. Step 5: Solve for x
   x = 723,048,831.76/31,031.61
6. Step 6: Final answer
   x = 23,300.40