Finding the Fourth Proportional to 31,053.15, 42,852.06 and 16,905.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,053.15 : 42,852.06 = 16,905.96 : x
2. Step 2: Convert to fraction form
   31,053.15/42,852.06 = 16,905.96/x
3. Step 3: Cross multiply
   31,053.15x = 42,852.06 × 16,905.96
4. Step 4: Simplify right side
   31,053.15x = 724,455,212.28
5. Step 5: Solve for x
   x = 724,455,212.28/31,053.15
6. Step 6: Final answer
   x = 23,329.52