Finding the Fourth Proportional to 142,482.99, 196,632.32 and 78,819.69

Step by Step Solution

1. Step 1: Write the proportion equation
   142,482.99 : 196,632.32 = 78,819.69 : x
2. Step 2: Convert to fraction form
   142,482.99/196,632.32 = 78,819.69/x
3. Step 3: Cross multiply
   142,482.99x = 196,632.32 × 78,819.69
4. Step 4: Simplify right side
   142,482.99x = 15,498,498,112.28
5. Step 5: Solve for x
   x = 15,498,498,112.28/142,482.99
6. Step 6: Final answer
   x = 108,774.37