Finding the Fourth Proportional to 142,298.99, 196,355.89 and 78,632.99

Step by Step Solution

1. Step 1: Write the proportion equation
   142,298.99 : 196,355.89 = 78,632.99 : x
2. Step 2: Convert to fraction form
   142,298.99/196,355.89 = 78,632.99/x
3. Step 3: Cross multiply
   142,298.99x = 196,355.89 × 78,632.99
4. Step 4: Simplify right side
   142,298.99x = 15,440,051,029.12
5. Step 5: Solve for x
   x = 15,440,051,029.12/142,298.99
6. Step 6: Final answer
   x = 108,504.29