Finding the Fourth Proportional to 78,081.76, 117,105.12 and 35,921.36

Step by Step Solution

1. Step 1: Write the proportion equation
   78,081.76 : 117,105.12 = 35,921.36 : x
2. Step 2: Convert to fraction form
   78,081.76/117,105.12 = 35,921.36/x
3. Step 3: Cross multiply
   78,081.76x = 117,105.12 × 35,921.36
4. Step 4: Simplify right side
   78,081.76x = 4,206,575,173.36
5. Step 5: Solve for x
   x = 4,206,575,173.36/78,081.76
6. Step 6: Final answer
   x = 53,873.98