Finding the Fourth Proportional to 140,141.94, 193,309.36 and 99,868.60

Step by Step Solution

1. Step 1: Write the proportion equation
   140,141.94 : 193,309.36 = 99,868.60 : x
2. Step 2: Convert to fraction form
   140,141.94/193,309.36 = 99,868.60/x
3. Step 3: Cross multiply
   140,141.94x = 193,309.36 × 99,868.60
4. Step 4: Simplify right side
   140,141.94x = 19,305,535,150.10
5. Step 5: Solve for x
   x = 19,305,535,150.10/140,141.94
6. Step 6: Final answer
   x = 137,757.01