Finding the Fourth Proportional to 31,085, 42,897.32 and 16,937.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,085 : 42,897.32 = 16,937.84 : x
2. Step 2: Convert to fraction form
   31,085/42,897.32 = 16,937.84/x
3. Step 3: Cross multiply
   31,085x = 42,897.32 × 16,937.84
4. Step 4: Simplify right side
   31,085x = 726,587,942.59
5. Step 5: Solve for x
   x = 726,587,942.59/31,085
6. Step 6: Final answer
   x = 23,374.23