Finding the Fourth Proportional to 140,809, 194,268.58 and 80,336.20

Step by Step Solution

1. Step 1: Write the proportion equation
   140,809 : 194,268.58 = 80,336.20 : x
2. Step 2: Convert to fraction form
   140,809/194,268.58 = 80,336.20/x
3. Step 3: Cross multiply
   140,809x = 194,268.58 × 80,336.20
4. Step 4: Simplify right side
   140,809x = 15,606,799,496.60
5. Step 5: Solve for x
   x = 15,606,799,496.60/140,809
6. Step 6: Final answer
   x = 110,836.66