Finding the Fourth Proportional to 105,362.17, 145,359.16 and 65,005.94

Step by Step Solution

1. Step 1: Write the proportion equation
   105,362.17 : 145,359.16 = 65,005.94 : x
2. Step 2: Convert to fraction form
   105,362.17/145,359.16 = 65,005.94/x
3. Step 3: Cross multiply
   105,362.17x = 145,359.16 × 65,005.94
4. Step 4: Simplify right side
   105,362.17x = 9,449,209,034.29
5. Step 5: Solve for x
   x = 9,449,209,034.29/105,362.17
6. Step 6: Final answer
   x = 89,683.13