Finding the Fourth Proportional to 31,051.48, 42,851.06 and 16,904.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,051.48 : 42,851.06 = 16,904.38 : x
2. Step 2: Convert to fraction form
   31,051.48/42,851.06 = 16,904.38/x
3. Step 3: Cross multiply
   31,051.48x = 42,851.06 × 16,904.38
4. Step 4: Simplify right side
   31,051.48x = 724,370,601.64
5. Step 5: Solve for x
   x = 724,370,601.64/31,051.48
6. Step 6: Final answer
   x = 23,328.05