Finding the Fourth Proportional to 140,883.61, 194,439.31 and 87,185.92

Step by Step Solution

1. Step 1: Write the proportion equation
   140,883.61 : 194,439.31 = 87,185.92 : x
2. Step 2: Convert to fraction form
   140,883.61/194,439.31 = 87,185.92/x
3. Step 3: Cross multiply
   140,883.61x = 194,439.31 × 87,185.92
4. Step 4: Simplify right side
   140,883.61x = 16,952,369,154.32
5. Step 5: Solve for x
   x = 16,952,369,154.32/140,883.61
6. Step 6: Final answer
   x = 120,328.90