Finding the Fourth Proportional to 83,420.82, 125,091.90 and 30,105.83

Step by Step Solution

1. Step 1: Write the proportion equation
   83,420.82 : 125,091.90 = 30,105.83 : x
2. Step 2: Convert to fraction form
   83,420.82/125,091.90 = 30,105.83/x
3. Step 3: Cross multiply
   83,420.82x = 125,091.90 × 30,105.83
4. Step 4: Simplify right side
   83,420.82x = 3,765,995,788.51
5. Step 5: Solve for x
   x = 3,765,995,788.51/83,420.82
6. Step 6: Final answer
   x = 45,144.55