Finding the Fourth Proportional to 79,306, 109,442.28 and 43,978

Step by Step Solution

1. Step 1: Write the proportion equation
   79,306 : 109,442.28 = 43,978 : x
2. Step 2: Convert to fraction form
   79,306/109,442.28 = 43,978/x
3. Step 3: Cross multiply
   79,306x = 109,442.28 × 43,978
4. Step 4: Simplify right side
   79,306x = 4,813,052,589.84
5. Step 5: Solve for x
   x = 4,813,052,589.84/79,306
6. Step 6: Final answer
   x = 60,689.64