Finding the Fourth Proportional to 31,054.80, 42,855.62 and 16,907.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,054.80 : 42,855.62 = 16,907.63 : x
2. Step 2: Convert to fraction form
   31,054.80/42,855.62 = 16,907.63/x
3. Step 3: Cross multiply
   31,054.80x = 42,855.62 × 16,907.63
4. Step 4: Simplify right side
   31,054.80x = 724,586,667.56
5. Step 5: Solve for x
   x = 724,586,667.56/31,054.80
6. Step 6: Final answer
   x = 23,332.52