Finding the Fourth Proportional to 79,771.92, 119,692.44 and 42,792.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79,771.92 : 119,692.44 = 42,792.72 : x
2. Step 2: Convert to fraction form
   79,771.92/119,692.44 = 42,792.72/x
3. Step 3: Cross multiply
   79,771.92x = 119,692.44 × 42,792.72
4. Step 4: Simplify right side
   79,771.92x = 5,121,965,071.04
5. Step 5: Solve for x
   x = 5,121,965,071.04/79,771.92
6. Step 6: Final answer
   x = 64,207.62