Finding the Fourth Proportional to 31,156, 42,994.68 and 17,008.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,156 : 42,994.68 = 17,008.96 : x
2. Step 2: Convert to fraction form
   31,156/42,994.68 = 17,008.96/x
3. Step 3: Cross multiply
   31,156x = 42,994.68 × 17,008.96
4. Step 4: Simplify right side
   31,156x = 731,294,792.33
5. Step 5: Solve for x
   x = 731,294,792.33/31,156
6. Step 6: Final answer
   x = 23,472.04