Finding the Fourth Proportional to 80,369.56, 120,384.66 and 64,488.52

Step by Step Solution

1. Step 1: Write the proportion equation
   80,369.56 : 120,384.66 = 64,488.52 : x
2. Step 2: Convert to fraction form
   80,369.56/120,384.66 = 64,488.52/x
3. Step 3: Cross multiply
   80,369.56x = 120,384.66 × 64,488.52
4. Step 4: Simplify right side
   80,369.56x = 7,763,428,554.10
5. Step 5: Solve for x
   x = 7,763,428,554.10/80,369.56
6. Step 6: Final answer
   x = 96,596.63