Finding the Fourth Proportional to 42,912.16, 64,386 and 23,167.49

Step by Step Solution

1. Step 1: Write the proportion equation
   42,912.16 : 64,386 = 23,167.49 : x
2. Step 2: Convert to fraction form
   42,912.16/64,386 = 23,167.49/x
3. Step 3: Cross multiply
   42,912.16x = 64,386 × 23,167.49
4. Step 4: Simplify right side
   42,912.16x = 1,491,662,172.11
5. Step 5: Solve for x
   x = 1,491,662,172.11/42,912.16
6. Step 6: Final answer
   x = 34,760.83