Finding the Fourth Proportional to 108,288.53, 149,477.74 and 65,269.55

Step by Step Solution

1. Step 1: Write the proportion equation
   108,288.53 : 149,477.74 = 65,269.55 : x
2. Step 2: Convert to fraction form
   108,288.53/149,477.74 = 65,269.55/x
3. Step 3: Cross multiply
   108,288.53x = 149,477.74 × 65,269.55
4. Step 4: Simplify right side
   108,288.53x = 9,756,344,872.16
5. Step 5: Solve for x
   x = 9,756,344,872.16/108,288.53
6. Step 6: Final answer
   x = 90,095.83