Finding the Fourth Proportional to 105,647.99, 158,074.56 and 74,119.55

Step by Step Solution

1. Step 1: Write the proportion equation
   105,647.99 : 158,074.56 = 74,119.55 : x
2. Step 2: Convert to fraction form
   105,647.99/158,074.56 = 74,119.55/x
3. Step 3: Cross multiply
   105,647.99x = 158,074.56 × 74,119.55
4. Step 4: Simplify right side
   105,647.99x = 11,716,414,463.28
5. Step 5: Solve for x
   x = 11,716,414,463.28/105,647.99
6. Step 6: Final answer
   x = 110,900.50