Finding the Fourth Proportional to 105,194.12, 157,891.98 and 65,830.28

Step by Step Solution

1. Step 1: Write the proportion equation
   105,194.12 : 157,891.98 = 65,830.28 : x
2. Step 2: Convert to fraction form
   105,194.12/157,891.98 = 65,830.28/x
3. Step 3: Cross multiply
   105,194.12x = 157,891.98 × 65,830.28
4. Step 4: Simplify right side
   105,194.12x = 10,394,073,253.15
5. Step 5: Solve for x
   x = 10,394,073,253.15/105,194.12
6. Step 6: Final answer
   x = 98,808.50