Finding the Fourth Proportional to 31,054.16, 42,854.74 and 16,907

Step by Step Solution

1. Step 1: Write the proportion equation
   31,054.16 : 42,854.74 = 16,907 : x
2. Step 2: Convert to fraction form
   31,054.16/42,854.74 = 16,907/x
3. Step 3: Cross multiply
   31,054.16x = 42,854.74 × 16,907
4. Step 4: Simplify right side
   31,054.16x = 724,545,089.18
5. Step 5: Solve for x
   x = 724,545,089.18/31,054.16
6. Step 6: Final answer
   x = 23,331.66