Finding the Fourth Proportional to 31,307.96, 43,205.32 and 17,160.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,307.96 : 43,205.32 = 17,160.50 : x
2. Step 2: Convert to fraction form
   31,307.96/43,205.32 = 17,160.50/x
3. Step 3: Cross multiply
   31,307.96x = 43,205.32 × 17,160.50
4. Step 4: Simplify right side
   31,307.96x = 741,424,893.86
5. Step 5: Solve for x
   x = 741,424,893.86/31,307.96
6. Step 6: Final answer
   x = 23,681.67