Finding the Fourth Proportional to 79,945.21, 119,854.54 and 30,019.74

Step by Step Solution

1. Step 1: Write the proportion equation
   79,945.21 : 119,854.54 = 30,019.74 : x
2. Step 2: Convert to fraction form
   79,945.21/119,854.54 = 30,019.74/x
3. Step 3: Cross multiply
   79,945.21x = 119,854.54 × 30,019.74
4. Step 4: Simplify right side
   79,945.21x = 3,598,002,128.62
5. Step 5: Solve for x
   x = 3,598,002,128.62/79,945.21
6. Step 6: Final answer
   x = 45,005.85