Finding the Fourth Proportional to 31,152, 42,997.44 and 17,911.68

Step by Step Solution

1. Step 1: Write the proportion equation
   31,152 : 42,997.44 = 17,911.68 : x
2. Step 2: Convert to fraction form
   31,152/42,997.44 = 17,911.68/x
3. Step 3: Cross multiply
   31,152x = 42,997.44 × 17,911.68
4. Step 4: Simplify right side
   31,152x = 770,156,386.10
5. Step 5: Solve for x
   x = 770,156,386.10/31,152
6. Step 6: Final answer
   x = 24,722.53