Finding the Fourth Proportional to 42,746.26, 64,132.35 and 30,290.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,746.26 : 64,132.35 = 30,290.42 : x
2. Step 2: Convert to fraction form
   42,746.26/64,132.35 = 30,290.42/x
3. Step 3: Cross multiply
   42,746.26x = 64,132.35 × 30,290.42
4. Step 4: Simplify right side
   42,746.26x = 1,942,595,817.09
5. Step 5: Solve for x
   x = 1,942,595,817.09/42,746.26
6. Step 6: Final answer
   x = 45,444.81