Finding the Fourth Proportional to 31,016.13, 42,802.41 and 16,868.98

Step by Step Solution

1. Step 1: Write the proportion equation
   31,016.13 : 42,802.41 = 16,868.98 : x
2. Step 2: Convert to fraction form
   31,016.13/42,802.41 = 16,868.98/x
3. Step 3: Cross multiply
   31,016.13x = 42,802.41 × 16,868.98
4. Step 4: Simplify right side
   31,016.13x = 722,032,998.24
5. Step 5: Solve for x
   x = 722,032,998.24/31,016.13
6. Step 6: Final answer
   x = 23,279.27