Finding the Fourth Proportional to 140,100, 193,338 and 89,799.12

Step by Step Solution

1. Step 1: Write the proportion equation
   140,100 : 193,338 = 89,799.12 : x
2. Step 2: Convert to fraction form
   140,100/193,338 = 89,799.12/x
3. Step 3: Cross multiply
   140,100x = 193,338 × 89,799.12
4. Step 4: Simplify right side
   140,100x = 17,361,582,262.56
5. Step 5: Solve for x
   x = 17,361,582,262.56/140,100
6. Step 6: Final answer
   x = 123,922.79