Finding the Fourth Proportional to 31,052.53, 42,852.50 and 16,905.39

Step by Step Solution

1. Step 1: Write the proportion equation
   31,052.53 : 42,852.50 = 16,905.39 : x
2. Step 2: Convert to fraction form
   31,052.53/42,852.50 = 16,905.39/x
3. Step 3: Cross multiply
   31,052.53x = 42,852.50 × 16,905.39
4. Step 4: Simplify right side
   31,052.53x = 724,438,224.98
5. Step 5: Solve for x
   x = 724,438,224.98/31,052.53
6. Step 6: Final answer
   x = 23,329.44