Finding the Fourth Proportional to 78,452.82, 108,260.40 and 42,642.54

Step by Step Solution

1. Step 1: Write the proportion equation
   78,452.82 : 108,260.40 = 42,642.54 : x
2. Step 2: Convert to fraction form
   78,452.82/108,260.40 = 42,642.54/x
3. Step 3: Cross multiply
   78,452.82x = 108,260.40 × 42,642.54
4. Step 4: Simplify right side
   78,452.82x = 4,616,498,437.42
5. Step 5: Solve for x
   x = 4,616,498,437.42/78,452.82
6. Step 6: Final answer
   x = 58,844.26