Finding the Fourth Proportional to 31,140.04, 42,971.94 and 17,709.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,140.04 : 42,971.94 = 17,709.42 : x
2. Step 2: Convert to fraction form
   31,140.04/42,971.94 = 17,709.42/x
3. Step 3: Cross multiply
   31,140.04x = 42,971.94 × 17,709.42
4. Step 4: Simplify right side
   31,140.04x = 761,008,133.67
5. Step 5: Solve for x
   x = 761,008,133.67/31,140.04
6. Step 6: Final answer
   x = 24,438.25