Finding the Fourth Proportional to 42,742.46, 64,107.69 and 14,662.05

Step by Step Solution

1. Step 1: Write the proportion equation
   42,742.46 : 64,107.69 = 14,662.05 : x
2. Step 2: Convert to fraction form
   42,742.46/64,107.69 = 14,662.05/x
3. Step 3: Cross multiply
   42,742.46x = 64,107.69 × 14,662.05
4. Step 4: Simplify right side
   42,742.46x = 939,950,156.16
5. Step 5: Solve for x
   x = 939,950,156.16/42,742.46
6. Step 6: Final answer
   x = 21,991.02