Finding the Fourth Proportional to 75,790.72, 104,594.88 and 42,256

Step by Step Solution

1. Step 1: Write the proportion equation
   75,790.72 : 104,594.88 = 42,256 : x
2. Step 2: Convert to fraction form
   75,790.72/104,594.88 = 42,256/x
3. Step 3: Cross multiply
   75,790.72x = 104,594.88 × 42,256
4. Step 4: Simplify right side
   75,790.72x = 4,419,761,249.28
5. Step 5: Solve for x
   x = 4,419,761,249.28/75,790.72
6. Step 6: Final answer
   x = 58,315.34