Finding the Fourth Proportional to 78,570.86, 117,805.49 and 33,621.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,570.86 : 117,805.49 = 33,621.56 : x
2. Step 2: Convert to fraction form
   78,570.86/117,805.49 = 33,621.56/x
3. Step 3: Cross multiply
   78,570.86x = 117,805.49 × 33,621.56
4. Step 4: Simplify right side
   78,570.86x = 3,960,803,829.75
5. Step 5: Solve for x
   x = 3,960,803,829.75/78,570.86
6. Step 6: Final answer
   x = 50,410.59