Finding the Fourth Proportional to 42,960.16, 64,384.96 and 34,644.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,960.16 : 64,384.96 = 34,644.16 : x
2. Step 2: Convert to fraction form
   42,960.16/64,384.96 = 34,644.16/x
3. Step 3: Cross multiply
   42,960.16x = 64,384.96 × 34,644.16
4. Step 4: Simplify right side
   42,960.16x = 2,230,562,855.83
5. Step 5: Solve for x
   x = 2,230,562,855.83/42,960.16
6. Step 6: Final answer
   x = 51,921.66