Finding the Fourth Proportional to 31,089.96, 42,904.08 and 16,942.77

Step by Step Solution

1. Step 1: Write the proportion equation
   31,089.96 : 42,904.08 = 16,942.77 : x
2. Step 2: Convert to fraction form
   31,089.96/42,904.08 = 16,942.77/x
3. Step 3: Cross multiply
   31,089.96x = 42,904.08 × 16,942.77
4. Step 4: Simplify right side
   31,089.96x = 726,913,959.50
5. Step 5: Solve for x
   x = 726,913,959.50/31,089.96
6. Step 6: Final answer
   x = 23,380.99