Finding the Fourth Proportional to 31,054.98, 42,855.89 and 16,907.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,054.98 : 42,855.89 = 16,907.88 : x
2. Step 2: Convert to fraction form
   31,054.98/42,855.89 = 16,907.88/x
3. Step 3: Cross multiply
   31,054.98x = 42,855.89 × 16,907.88
4. Step 4: Simplify right side
   31,054.98x = 724,602,245.41
5. Step 5: Solve for x
   x = 724,602,245.41/31,054.98
6. Step 6: Final answer
   x = 23,332.88