Finding the Fourth Proportional to 31,016.76, 42,803.01 and 16,869.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,016.76 : 42,803.01 = 16,869.84 : x
2. Step 2: Convert to fraction form
   31,016.76/42,803.01 = 16,869.84/x
3. Step 3: Cross multiply
   31,016.76x = 42,803.01 × 16,869.84
4. Step 4: Simplify right side
   31,016.76x = 722,079,930.22
5. Step 5: Solve for x
   x = 722,079,930.22/31,016.76
6. Step 6: Final answer
   x = 23,280.31