Finding the Fourth Proportional to 105,611.78, 158,306.94 and 49,404.53

Step by Step Solution

1. Step 1: Write the proportion equation
   105,611.78 : 158,306.94 = 49,404.53 : x
2. Step 2: Convert to fraction form
   105,611.78/158,306.94 = 49,404.53/x
3. Step 3: Cross multiply
   105,611.78x = 158,306.94 × 49,404.53
4. Step 4: Simplify right side
   105,611.78x = 7,821,080,362.21
5. Step 5: Solve for x
   x = 7,821,080,362.21/105,611.78
6. Step 6: Final answer
   x = 74,055.00