Finding the Fourth Proportional to 31,052.93, 42,851.69 and 16,905.77

Step by Step Solution

1. Step 1: Write the proportion equation
   31,052.93 : 42,851.69 = 16,905.77 : x
2. Step 2: Convert to fraction form
   31,052.93/42,851.69 = 16,905.77/x
3. Step 3: Cross multiply
   31,052.93x = 42,851.69 × 16,905.77
4. Step 4: Simplify right side
   31,052.93x = 724,440,730.72
5. Step 5: Solve for x
   x = 724,440,730.72/31,052.93
6. Step 6: Final answer
   x = 23,329.22