Finding the Fourth Proportional to 116,524.80, 160,819.20 and 78,796.80

Step by Step Solution

1. Step 1: Write the proportion equation
   116,524.80 : 160,819.20 = 78,796.80 : x
2. Step 2: Convert to fraction form
   116,524.80/160,819.20 = 78,796.80/x
3. Step 3: Cross multiply
   116,524.80x = 160,819.20 × 78,796.80
4. Step 4: Simplify right side
   116,524.80x = 12,672,038,338.56
5. Step 5: Solve for x
   x = 12,672,038,338.56/116,524.80
6. Step 6: Final answer
   x = 108,749.71