Finding the Fourth Proportional to 105,183.45, 145,200.06 and 81,847.08

Step by Step Solution

1. Step 1: Write the proportion equation
   105,183.45 : 145,200.06 = 81,847.08 : x
2. Step 2: Convert to fraction form
   105,183.45/145,200.06 = 81,847.08/x
3. Step 3: Cross multiply
   105,183.45x = 145,200.06 × 81,847.08
4. Step 4: Simplify right side
   105,183.45x = 11,884,200,926.82
5. Step 5: Solve for x
   x = 11,884,200,926.82/105,183.45
6. Step 6: Final answer
   x = 112,985.46