Finding the Fourth Proportional to 105,268.21, 145,304.74 and 83,797.34

Step by Step Solution

1. Step 1: Write the proportion equation
   105,268.21 : 145,304.74 = 83,797.34 : x
2. Step 2: Convert to fraction form
   105,268.21/145,304.74 = 83,797.34/x
3. Step 3: Cross multiply
   105,268.21x = 145,304.74 × 83,797.34
4. Step 4: Simplify right side
   105,268.21x = 12,176,149,608.25
5. Step 5: Solve for x
   x = 12,176,149,608.25/105,268.21
6. Step 6: Final answer
   x = 115,667.87