Finding the Fourth Proportional to 105,019.49, 157,481.85 and 30,122.45

Step by Step Solution

1. Step 1: Write the proportion equation
   105,019.49 : 157,481.85 = 30,122.45 : x
2. Step 2: Convert to fraction form
   105,019.49/157,481.85 = 30,122.45/x
3. Step 3: Cross multiply
   105,019.49x = 157,481.85 × 30,122.45
4. Step 4: Simplify right side
   105,019.49x = 4,743,739,152.53
5. Step 5: Solve for x
   x = 4,743,739,152.53/105,019.49
6. Step 6: Final answer
   x = 45,170.08