Finding the Fourth Proportional to 58,028.12, 80,103.30 and 39,190.76

Step by Step Solution

1. Step 1: Write the proportion equation
   58,028.12 : 80,103.30 = 39,190.76 : x
2. Step 2: Convert to fraction form
   58,028.12/80,103.30 = 39,190.76/x
3. Step 3: Cross multiply
   58,028.12x = 80,103.30 × 39,190.76
4. Step 4: Simplify right side
   58,028.12x = 3,139,309,205.51
5. Step 5: Solve for x
   x = 3,139,309,205.51/58,028.12
6. Step 6: Final answer
   x = 54,099.79