Finding the Fourth Proportional to 42,895.50, 64,343.04 and 10,874.58

Step by Step Solution

1. Step 1: Write the proportion equation
   42,895.50 : 64,343.04 = 10,874.58 : x
2. Step 2: Convert to fraction form
   42,895.50/64,343.04 = 10,874.58/x
3. Step 3: Cross multiply
   42,895.50x = 64,343.04 × 10,874.58
4. Step 4: Simplify right side
   42,895.50x = 699,703,535.92
5. Step 5: Solve for x
   x = 699,703,535.92/42,895.50
6. Step 6: Final answer
   x = 16,311.82