Finding the Fourth Proportional to 31,053.07, 42,851.82 and 16,905.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,053.07 : 42,851.82 = 16,905.88 : x
2. Step 2: Convert to fraction form
   31,053.07/42,851.82 = 16,905.88/x
3. Step 3: Cross multiply
   31,053.07x = 42,851.82 × 16,905.88
4. Step 4: Simplify right side
   31,053.07x = 724,447,726.70
5. Step 5: Solve for x
   x = 724,447,726.70/31,053.07
6. Step 6: Final answer
   x = 23,329.34