Finding the Fourth Proportional to 141,116.64, 194,740.71 and 80,688.42

Step by Step Solution

1. Step 1: Write the proportion equation
   141,116.64 : 194,740.71 = 80,688.42 : x
2. Step 2: Convert to fraction form
   141,116.64/194,740.71 = 80,688.42/x
3. Step 3: Cross multiply
   141,116.64x = 194,740.71 × 80,688.42
4. Step 4: Simplify right side
   141,116.64x = 15,713,320,199.58
5. Step 5: Solve for x
   x = 15,713,320,199.58/141,116.64
6. Step 6: Final answer
   x = 111,349.87