Finding the Fourth Proportional to 140,883.31, 194,438.88 and 87,185.62

Step by Step Solution

1. Step 1: Write the proportion equation
   140,883.31 : 194,438.88 = 87,185.62 : x
2. Step 2: Convert to fraction form
   140,883.31/194,438.88 = 87,185.62/x
3. Step 3: Cross multiply
   140,883.31x = 194,438.88 × 87,185.62
4. Step 4: Simplify right side
   140,883.31x = 16,952,274,304.91
5. Step 5: Solve for x
   x = 16,952,274,304.91/140,883.31
6. Step 6: Final answer
   x = 120,328.48