Finding the Fourth Proportional to 31,120.98, 42,950.58 and 17,694.24

Step by Step Solution

1. Step 1: Write the proportion equation
   31,120.98 : 42,950.58 = 17,694.24 : x
2. Step 2: Convert to fraction form
   31,120.98/42,950.58 = 17,694.24/x
3. Step 3: Cross multiply
   31,120.98x = 42,950.58 × 17,694.24
4. Step 4: Simplify right side
   31,120.98x = 759,977,870.66
5. Step 5: Solve for x
   x = 759,977,870.66/31,120.98
6. Step 6: Final answer
   x = 24,420.11