Finding the Fourth Proportional to 105,364.17, 145,361.92 and 65,007.94

Step by Step Solution

1. Step 1: Write the proportion equation
   105,364.17 : 145,361.92 = 65,007.94 : x
2. Step 2: Convert to fraction form
   105,364.17/145,361.92 = 65,007.94/x
3. Step 3: Cross multiply
   105,364.17x = 145,361.92 × 65,007.94
4. Step 4: Simplify right side
   105,364.17x = 9,449,678,973.64
5. Step 5: Solve for x
   x = 9,449,678,973.64/105,364.17
6. Step 6: Final answer
   x = 89,685.89