Finding the Fourth Proportional to 42,923.16, 64,364.31 and 13,341.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,923.16 : 64,364.31 = 13,341.42 : x
2. Step 2: Convert to fraction form
   42,923.16/64,364.31 = 13,341.42/x
3. Step 3: Cross multiply
   42,923.16x = 64,364.31 × 13,341.42
4. Step 4: Simplify right side
   42,923.16x = 858,711,292.72
5. Step 5: Solve for x
   x = 858,711,292.72/42,923.16
6. Step 6: Final answer
   x = 20,005.78