Finding the Fourth Proportional to 31,090.04, 42,904.22 and 16,942.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,090.04 : 42,904.22 = 16,942.88 : x
2. Step 2: Convert to fraction form
   31,090.04/42,904.22 = 16,942.88/x
3. Step 3: Cross multiply
   31,090.04x = 42,904.22 × 16,942.88
4. Step 4: Simplify right side
   31,090.04x = 726,921,050.95
5. Step 5: Solve for x
   x = 726,921,050.95/31,090.04
6. Step 6: Final answer
   x = 23,381.16