Finding the Fourth Proportional to 31,051.32, 42,850.92 and 16,904.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,051.32 : 42,850.92 = 16,904.25 : x
2. Step 2: Convert to fraction form
   31,051.32/42,850.92 = 16,904.25/x
3. Step 3: Cross multiply
   31,051.32x = 42,850.92 × 16,904.25
4. Step 4: Simplify right side
   31,051.32x = 724,362,664.41
5. Step 5: Solve for x
   x = 724,362,664.41/31,051.32
6. Step 6: Final answer
   x = 23,327.92