Finding the Fourth Proportional to 142,481, 196,606.76 and 78,810.14

Step by Step Solution

1. Step 1: Write the proportion equation
   142,481 : 196,606.76 = 78,810.14 : x
2. Step 2: Convert to fraction form
   142,481/196,606.76 = 78,810.14/x
3. Step 3: Cross multiply
   142,481x = 196,606.76 × 78,810.14
4. Step 4: Simplify right side
   142,481x = 15,494,606,280.55
5. Step 5: Solve for x
   x = 15,494,606,280.55/142,481
6. Step 6: Final answer
   x = 108,748.58