Finding the Fourth Proportional to 105,579, 145,697.22 and 57,832.20

Step by Step Solution

1. Step 1: Write the proportion equation
   105,579 : 145,697.22 = 57,832.20 : x
2. Step 2: Convert to fraction form
   105,579/145,697.22 = 57,832.20/x
3. Step 3: Cross multiply
   105,579x = 145,697.22 × 57,832.20
4. Step 4: Simplify right side
   105,579x = 8,425,990,766.48
5. Step 5: Solve for x
   x = 8,425,990,766.48/105,579
6. Step 6: Final answer
   x = 79,807.45