Finding the Fourth Proportional to 42,828.56, 64,126.92 and 30,296.96

Step by Step Solution

1. Step 1: Write the proportion equation
   42,828.56 : 64,126.92 = 30,296.96 : x
2. Step 2: Convert to fraction form
   42,828.56/64,126.92 = 30,296.96/x
3. Step 3: Cross multiply
   42,828.56x = 64,126.92 × 30,296.96
4. Step 4: Simplify right side
   42,828.56x = 1,942,850,730.16
5. Step 5: Solve for x
   x = 1,942,850,730.16/42,828.56
6. Step 6: Final answer
   x = 45,363.44