Finding the Fourth Proportional to 31,051.35, 42,851.03 and 16,904.30

Step by Step Solution

1. Step 1: Write the proportion equation
   31,051.35 : 42,851.03 = 16,904.30 : x
2. Step 2: Convert to fraction form
   31,051.35/42,851.03 = 16,904.30/x
3. Step 3: Cross multiply
   31,051.35x = 42,851.03 × 16,904.30
4. Step 4: Simplify right side
   31,051.35x = 724,366,367.65
5. Step 5: Solve for x
   x = 724,366,367.65/31,051.35
6. Step 6: Final answer
   x = 23,328.02