Finding the Fourth Proportional to 116,196.80, 173,857.80 and 76,830.80

Step by Step Solution

1. Step 1: Write the proportion equation
   116,196.80 : 173,857.80 = 76,830.80 : x
2. Step 2: Convert to fraction form
   116,196.80/173,857.80 = 76,830.80/x
3. Step 3: Cross multiply
   116,196.80x = 173,857.80 × 76,830.80
4. Step 4: Simplify right side
   116,196.80x = 13,357,633,860.24
5. Step 5: Solve for x
   x = 13,357,633,860.24/116,196.80
6. Step 6: Final answer
   x = 114,956.99