Finding the Fourth Proportional to 42,927.76, 64,388.52 and 11,760.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,927.76 : 64,388.52 = 11,760.56 : x
2. Step 2: Convert to fraction form
   42,927.76/64,388.52 = 11,760.56/x
3. Step 3: Cross multiply
   42,927.76x = 64,388.52 × 11,760.56
4. Step 4: Simplify right side
   42,927.76x = 757,245,052.77
5. Step 5: Solve for x
   x = 757,245,052.77/42,927.76
6. Step 6: Final answer
   x = 17,639.99