Finding the Fourth Proportional to 105,903.72, 158,613.66 and 50,538.60

Step by Step Solution

1. Step 1: Write the proportion equation
   105,903.72 : 158,613.66 = 50,538.60 : x
2. Step 2: Convert to fraction form
   105,903.72/158,613.66 = 50,538.60/x
3. Step 3: Cross multiply
   105,903.72x = 158,613.66 × 50,538.60
4. Step 4: Simplify right side
   105,903.72x = 8,016,112,317.28
5. Step 5: Solve for x
   x = 8,016,112,317.28/105,903.72
6. Step 6: Final answer
   x = 75,692.45