Finding the Fourth Proportional to 42,745.46, 64,112.19 and 14,665.05

Step by Step Solution

1. Step 1: Write the proportion equation
   42,745.46 : 64,112.19 = 14,665.05 : x
2. Step 2: Convert to fraction form
   42,745.46/64,112.19 = 14,665.05/x
3. Step 3: Cross multiply
   42,745.46x = 64,112.19 × 14,665.05
4. Step 4: Simplify right side
   42,745.46x = 940,208,471.96
5. Step 5: Solve for x
   x = 940,208,471.96/42,745.46
6. Step 6: Final answer
   x = 21,995.52