Finding the Fourth Proportional to 31,039.35, 42,835.20 and 16,893.09

Step by Step Solution

1. Step 1: Write the proportion equation
   31,039.35 : 42,835.20 = 16,893.09 : x
2. Step 2: Convert to fraction form
   31,039.35/42,835.20 = 16,893.09/x
3. Step 3: Cross multiply
   31,039.35x = 42,835.20 × 16,893.09
4. Step 4: Simplify right side
   31,039.35x = 723,618,888.77
5. Step 5: Solve for x
   x = 723,618,888.77/31,039.35
6. Step 6: Final answer
   x = 23,312.95