Finding the Fourth Proportional to 78,580.09, 108,442.82 and 42,772.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,580.09 : 108,442.82 = 42,772.42 : x
2. Step 2: Convert to fraction form
   78,580.09/108,442.82 = 42,772.42/x
3. Step 3: Cross multiply
   78,580.09x = 108,442.82 × 42,772.42
4. Step 4: Simplify right side
   78,580.09x = 4,638,361,843.02
5. Step 5: Solve for x
   x = 4,638,361,843.02/78,580.09
6. Step 6: Final answer
   x = 59,027.19