Finding the Fourth Proportional to 31,051.40, 42,851.12 and 16,904.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,051.40 : 42,851.12 = 16,904.25 : x
2. Step 2: Convert to fraction form
   31,051.40/42,851.12 = 16,904.25/x
3. Step 3: Cross multiply
   31,051.40x = 42,851.12 × 16,904.25
4. Step 4: Simplify right side
   31,051.40x = 724,365,960.74
5. Step 5: Solve for x
   x = 724,365,960.74/31,051.40
6. Step 6: Final answer
   x = 23,327.97