Finding the Fourth Proportional to 42,706.72, 64,015.48 and 14,618.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,706.72 : 64,015.48 = 14,618.52 : x
2. Step 2: Convert to fraction form
   42,706.72/64,015.48 = 14,618.52/x
3. Step 3: Cross multiply
   42,706.72x = 64,015.48 × 14,618.52
4. Step 4: Simplify right side
   42,706.72x = 935,811,574.69
5. Step 5: Solve for x
   x = 935,811,574.69/42,706.72
6. Step 6: Final answer
   x = 21,912.51