Finding the Fourth Proportional to 105,501.68, 158,143.16 and 65,968.02

Step by Step Solution

1. Step 1: Write the proportion equation
   105,501.68 : 158,143.16 = 65,968.02 : x
2. Step 2: Convert to fraction form
   105,501.68/158,143.16 = 65,968.02/x
3. Step 3: Cross multiply
   105,501.68x = 158,143.16 × 65,968.02
4. Step 4: Simplify right side
   105,501.68x = 10,432,391,141.74
5. Step 5: Solve for x
   x = 10,432,391,141.74/105,501.68
6. Step 6: Final answer
   x = 98,883.65