Finding the Fourth Proportional to 42,868.14, 64,304.18 and 20,700.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,868.14 : 64,304.18 = 20,700.16 : x
2. Step 2: Convert to fraction form
   42,868.14/64,304.18 = 20,700.16/x
3. Step 3: Cross multiply
   42,868.14x = 64,304.18 × 20,700.16
4. Step 4: Simplify right side
   42,868.14x = 1,331,106,628.03
5. Step 5: Solve for x
   x = 1,331,106,628.03/42,868.14
6. Step 6: Final answer
   x = 31,051.19