Finding the Fourth Proportional to 42,742.26, 64,105.83 and 11,579.94

Step by Step Solution

1. Step 1: Write the proportion equation
   42,742.26 : 64,105.83 = 11,579.94 : x
2. Step 2: Convert to fraction form
   42,742.26/64,105.83 = 11,579.94/x
3. Step 3: Cross multiply
   42,742.26x = 64,105.83 × 11,579.94
4. Step 4: Simplify right side
   42,742.26x = 742,341,665.05
5. Step 5: Solve for x
   x = 742,341,665.05/42,742.26
6. Step 6: Final answer
   x = 17,367.86