Finding the Fourth Proportional to 73,082.28, 100,842.72 and 42,856.20

Step by Step Solution

1. Step 1: Write the proportion equation
   73,082.28 : 100,842.72 = 42,856.20 : x
2. Step 2: Convert to fraction form
   73,082.28/100,842.72 = 42,856.20/x
3. Step 3: Cross multiply
   73,082.28x = 100,842.72 × 42,856.20
4. Step 4: Simplify right side
   73,082.28x = 4,321,735,776.86
5. Step 5: Solve for x
   x = 4,321,735,776.86/73,082.28
6. Step 6: Final answer
   x = 59,135.21