Finding the Fourth Proportional to 140,910.08, 194,476.69 and 89,231.90

Step by Step Solution

1. Step 1: Write the proportion equation
   140,910.08 : 194,476.69 = 89,231.90 : x
2. Step 2: Convert to fraction form
   140,910.08/194,476.69 = 89,231.90/x
3. Step 3: Cross multiply
   140,910.08x = 194,476.69 × 89,231.90
4. Step 4: Simplify right side
   140,910.08x = 17,353,523,191.64
5. Step 5: Solve for x
   x = 17,353,523,191.64/140,910.08
6. Step 6: Final answer
   x = 123,153.17