Finding the Fourth Proportional to 31,053.75, 42,853.86 and 16,906.29

Step by Step Solution

1. Step 1: Write the proportion equation
   31,053.75 : 42,853.86 = 16,906.29 : x
2. Step 2: Convert to fraction form
   31,053.75/42,853.86 = 16,906.29/x
3. Step 3: Cross multiply
   31,053.75x = 42,853.86 × 16,906.29
4. Step 4: Simplify right side
   31,053.75x = 724,499,784.78
5. Step 5: Solve for x
   x = 724,499,784.78/31,053.75
6. Step 6: Final answer
   x = 23,330.51