Finding the Fourth Proportional to 45,028.31, 67,161.96 and 42,426.59

Step by Step Solution

1. Step 1: Write the proportion equation
   45,028.31 : 67,161.96 = 42,426.59 : x
2. Step 2: Convert to fraction form
   45,028.31/67,161.96 = 42,426.59/x
3. Step 3: Cross multiply
   45,028.31x = 67,161.96 × 42,426.59
4. Step 4: Simplify right side
   45,028.31x = 2,849,452,604.71
5. Step 5: Solve for x
   x = 2,849,452,604.71/45,028.31
6. Step 6: Final answer
   x = 63,281.37