Finding the Fourth Proportional to 142,427.46, 196,554.72 and 78,761.46

Step by Step Solution

1. Step 1: Write the proportion equation
   142,427.46 : 196,554.72 = 78,761.46 : x
2. Step 2: Convert to fraction form
   142,427.46/196,554.72 = 78,761.46/x
3. Step 3: Cross multiply
   142,427.46x = 196,554.72 × 78,761.46
4. Step 4: Simplify right side
   142,427.46x = 15,480,936,717.09
5. Step 5: Solve for x
   x = 15,480,936,717.09/142,427.46
6. Step 6: Final answer
   x = 108,693.48