Finding the Fourth Proportional to 78,404.48, 108,198.36 and 42,594.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,404.48 : 108,198.36 = 42,594.20 : x
2. Step 2: Convert to fraction form
   78,404.48/108,198.36 = 42,594.20/x
3. Step 3: Cross multiply
   78,404.48x = 108,198.36 × 42,594.20
4. Step 4: Simplify right side
   78,404.48x = 4,608,622,585.51
5. Step 5: Solve for x
   x = 4,608,622,585.51/78,404.48
6. Step 6: Final answer
   x = 58,780.09