Finding the Fourth Proportional to 31,039.32, 42,835.16 and 16,893.06

Step by Step Solution

1. Step 1: Write the proportion equation
   31,039.32 : 42,835.16 = 16,893.06 : x
2. Step 2: Convert to fraction form
   31,039.32/42,835.16 = 16,893.06/x
3. Step 3: Cross multiply
   31,039.32x = 42,835.16 × 16,893.06
4. Step 4: Simplify right side
   31,039.32x = 723,616,843.52
5. Step 5: Solve for x
   x = 723,616,843.52/31,039.32
6. Step 6: Final answer
   x = 23,312.91