Finding the Fourth Proportional to 140,879.55, 194,433.71 and 87,181.88

Step by Step Solution

1. Step 1: Write the proportion equation
   140,879.55 : 194,433.71 = 87,181.88 : x
2. Step 2: Convert to fraction form
   140,879.55/194,433.71 = 87,181.88/x
3. Step 3: Cross multiply
   140,879.55x = 194,433.71 × 87,181.88
4. Step 4: Simplify right side
   140,879.55x = 16,951,094,965.10
5. Step 5: Solve for x
   x = 16,951,094,965.10/140,879.55
6. Step 6: Final answer
   x = 120,323.32