Finding the Fourth Proportional to 105,507.18, 158,151.42 and 65,973.54

Step by Step Solution

1. Step 1: Write the proportion equation
   105,507.18 : 158,151.42 = 65,973.54 : x
2. Step 2: Convert to fraction form
   105,507.18/158,151.42 = 65,973.54/x
3. Step 3: Cross multiply
   105,507.18x = 158,151.42 × 65,973.54
4. Step 4: Simplify right side
   105,507.18x = 10,433,809,033.43
5. Step 5: Solve for x
   x = 10,433,809,033.43/105,507.18
6. Step 6: Final answer
   x = 98,891.93