Finding the Fourth Proportional to 105,928.93, 158,932.32 and 99,669.25

Step by Step Solution

1. Step 1: Write the proportion equation
   105,928.93 : 158,932.32 = 99,669.25 : x
2. Step 2: Convert to fraction form
   105,928.93/158,932.32 = 99,669.25/x
3. Step 3: Cross multiply
   105,928.93x = 158,932.32 × 99,669.25
4. Step 4: Simplify right side
   105,928.93x = 15,840,665,135.16
5. Step 5: Solve for x
   x = 15,840,665,135.16/105,928.93
6. Step 6: Final answer
   x = 149,540.50