Finding the Fourth Proportional to 31,307.78, 43,205.00 and 17,160.73

Step by Step Solution

1. Step 1: Write the proportion equation
   31,307.78 : 43,205.00 = 17,160.73 : x
2. Step 2: Convert to fraction form
   31,307.78/43,205.00 = 17,160.73/x
3. Step 3: Cross multiply
   31,307.78x = 43,205.00 × 17,160.73
4. Step 4: Simplify right side
   31,307.78x = 741,429,145.83
5. Step 5: Solve for x
   x = 741,429,145.83/31,307.78
6. Step 6: Final answer
   x = 23,681.94