Finding the Fourth Proportional to 31,153.10, 42,991.37 and 17,006.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,153.10 : 42,991.37 = 17,006.18 : x
2. Step 2: Convert to fraction form
   31,153.10/42,991.37 = 17,006.18/x
3. Step 3: Cross multiply
   31,153.10x = 42,991.37 × 17,006.18
4. Step 4: Simplify right side
   31,153.10x = 731,118,676.68
5. Step 5: Solve for x
   x = 731,118,676.68/31,153.10
6. Step 6: Final answer
   x = 23,468.57