Finding the Fourth Proportional to 31,154, 42,990.92 and 17,004.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,154 : 42,990.92 = 17,004.12 : x
2. Step 2: Convert to fraction form
   31,154/42,990.92 = 17,004.12/x
3. Step 3: Cross multiply
   31,154x = 42,990.92 × 17,004.12
4. Step 4: Simplify right side
   31,154x = 731,022,762.59
5. Step 5: Solve for x
   x = 731,022,762.59/31,154
6. Step 6: Final answer
   x = 23,464.81