Finding the Fourth Proportional to 142,367.72, 196,457.58 and 78,700.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,367.72 : 196,457.58 = 78,700.50 : x
2. Step 2: Convert to fraction form
   142,367.72/196,457.58 = 78,700.50/x
3. Step 3: Cross multiply
   142,367.72x = 196,457.58 × 78,700.50
4. Step 4: Simplify right side
   142,367.72x = 15,461,309,774.79
5. Step 5: Solve for x
   x = 15,461,309,774.79/142,367.72
6. Step 6: Final answer
   x = 108,601.24