Finding the Fourth Proportional to 31,053.83, 42,855.05 and 16,907.45

Step by Step Solution

1. Step 1: Write the proportion equation
   31,053.83 : 42,855.05 = 16,907.45 : x
2. Step 2: Convert to fraction form
   31,053.83/42,855.05 = 16,907.45/x
3. Step 3: Cross multiply
   31,053.83x = 42,855.05 × 16,907.45
4. Step 4: Simplify right side
   31,053.83x = 724,569,615.12
5. Step 5: Solve for x
   x = 724,569,615.12/31,053.83
6. Step 6: Final answer
   x = 23,332.70