Finding the Fourth Proportional to 31,515.94, 43,491.42 and 17,175.89

Step by Step Solution

1. Step 1: Write the proportion equation
   31,515.94 : 43,491.42 = 17,175.89 : x
2. Step 2: Convert to fraction form
   31,515.94/43,491.42 = 17,175.89/x
3. Step 3: Cross multiply
   31,515.94x = 43,491.42 × 17,175.89
4. Step 4: Simplify right side
   31,515.94x = 747,003,845.86
5. Step 5: Solve for x
   x = 747,003,845.86/31,515.94
6. Step 6: Final answer
   x = 23,702.41