Finding the Fourth Proportional to 42,942.72, 64,344.64 and 23,230.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,942.72 : 64,344.64 = 23,230.56 : x
2. Step 2: Convert to fraction form
   42,942.72/64,344.64 = 23,230.56/x
3. Step 3: Cross multiply
   42,942.72x = 64,344.64 × 23,230.56
4. Step 4: Simplify right side
   42,942.72x = 1,494,762,020.20
5. Step 5: Solve for x
   x = 1,494,762,020.20/42,942.72
6. Step 6: Final answer
   x = 34,808.28