Finding the Fourth Proportional to 42,333.36, 63,414.96 and 20,168.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,333.36 : 63,414.96 = 20,168.16 : x
2. Step 2: Convert to fraction form
   42,333.36/63,414.96 = 20,168.16/x
3. Step 3: Cross multiply
   42,333.36x = 63,414.96 × 20,168.16
4. Step 4: Simplify right side
   42,333.36x = 1,278,963,059.67
5. Step 5: Solve for x
   x = 1,278,963,059.67/42,333.36
6. Step 6: Final answer
   x = 30,211.71