Finding the Fourth Proportional to 108,474.39, 149,709.57 and 65,456.10

Step by Step Solution

1. Step 1: Write the proportion equation
   108,474.39 : 149,709.57 = 65,456.10 : x
2. Step 2: Convert to fraction form
   108,474.39/149,709.57 = 65,456.10/x
3. Step 3: Cross multiply
   108,474.39x = 149,709.57 × 65,456.10
4. Step 4: Simplify right side
   108,474.39x = 9,799,404,339.42
5. Step 5: Solve for x
   x = 9,799,404,339.42/108,474.39
6. Step 6: Final answer
   x = 90,338.41