Finding the Fourth Proportional to 42,768.54, 64,145.52 and 11,596.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,768.54 : 64,145.52 = 11,596.50 : x
2. Step 2: Convert to fraction form
   42,768.54/64,145.52 = 11,596.50/x
3. Step 3: Cross multiply
   42,768.54x = 64,145.52 × 11,596.50
4. Step 4: Simplify right side
   42,768.54x = 743,863,522.68
5. Step 5: Solve for x
   x = 743,863,522.68/42,768.54
6. Step 6: Final answer
   x = 17,392.77