Finding the Fourth Proportional to 142,034.67, 196,011.99 and 78,376.59

Step by Step Solution

1. Step 1: Write the proportion equation
   142,034.67 : 196,011.99 = 78,376.59 : x
2. Step 2: Convert to fraction form
   142,034.67/196,011.99 = 78,376.59/x
3. Step 3: Cross multiply
   142,034.67x = 196,011.99 × 78,376.59
4. Step 4: Simplify right side
   142,034.67x = 15,362,751,375.31
5. Step 5: Solve for x
   x = 15,362,751,375.31/142,034.67
6. Step 6: Final answer
   x = 108,161.98