Finding the Fourth Proportional to 78,403.48, 108,196.98 and 42,593.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,403.48 : 108,196.98 = 42,593.20 : x
2. Step 2: Convert to fraction form
   78,403.48/108,196.98 = 42,593.20/x
3. Step 3: Cross multiply
   78,403.48x = 108,196.98 × 42,593.20
4. Step 4: Simplify right side
   78,403.48x = 4,608,455,608.54
5. Step 5: Solve for x
   x = 4,608,455,608.54/78,403.48
6. Step 6: Final answer
   x = 58,778.71