Finding the Fourth Proportional to 31,016.01, 42,801.98 and 16,869.09

Step by Step Solution

1. Step 1: Write the proportion equation
   31,016.01 : 42,801.98 = 16,869.09 : x
2. Step 2: Convert to fraction form
   31,016.01/42,801.98 = 16,869.09/x
3. Step 3: Cross multiply
   31,016.01x = 42,801.98 × 16,869.09
4. Step 4: Simplify right side
   31,016.01x = 722,030,368.45
5. Step 5: Solve for x
   x = 722,030,368.45/31,016.01
6. Step 6: Final answer
   x = 23,279.28