Finding the Fourth Proportional to 105,598.37, 145,730.99 and 65,333.09

Step by Step Solution

1. Step 1: Write the proportion equation
   105,598.37 : 145,730.99 = 65,333.09 : x
2. Step 2: Convert to fraction form
   105,598.37/145,730.99 = 65,333.09/x
3. Step 3: Cross multiply
   105,598.37x = 145,730.99 × 65,333.09
4. Step 4: Simplify right side
   105,598.37x = 9,521,055,320.14
5. Step 5: Solve for x
   x = 9,521,055,320.14/105,598.37
6. Step 6: Final answer
   x = 90,162.90