Finding the Fourth Proportional to 140,920.40, 194,367.12 and 89,968.16

Step by Step Solution

1. Step 1: Write the proportion equation
   140,920.40 : 194,367.12 = 89,968.16 : x
2. Step 2: Convert to fraction form
   140,920.40/194,367.12 = 89,968.16/x
3. Step 3: Cross multiply
   140,920.40x = 194,367.12 × 89,968.16
4. Step 4: Simplify right side
   140,920.40x = 17,486,852,150.90
5. Step 5: Solve for x
   x = 17,486,852,150.90/140,920.40
6. Step 6: Final answer
   x = 124,090.28