Finding the Fourth Proportional to 42,847.27, 64,286.31 and 19,152.84

Step by Step Solution

1. Step 1: Write the proportion equation
   42,847.27 : 64,286.31 = 19,152.84 : x
2. Step 2: Convert to fraction form
   42,847.27/64,286.31 = 19,152.84/x
3. Step 3: Cross multiply
   42,847.27x = 64,286.31 × 19,152.84
4. Step 4: Simplify right side
   42,847.27x = 1,231,265,409.62
5. Step 5: Solve for x
   x = 1,231,265,409.62/42,847.27
6. Step 6: Final answer
   x = 28,736.15