Finding the Fourth Proportional to 42,924.16, 64,365.81 and 13,342.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,924.16 : 64,365.81 = 13,342.42 : x
2. Step 2: Convert to fraction form
   42,924.16/64,365.81 = 13,342.42/x
3. Step 3: Cross multiply
   42,924.16x = 64,365.81 × 13,342.42
4. Step 4: Simplify right side
   42,924.16x = 858,795,670.66
5. Step 5: Solve for x
   x = 858,795,670.66/42,924.16
6. Step 6: Final answer
   x = 20,007.28