Finding the Fourth Proportional to 142,311.04, 196,377.42 and 78,648.82

Step by Step Solution

1. Step 1: Write the proportion equation
   142,311.04 : 196,377.42 = 78,648.82 : x
2. Step 2: Convert to fraction form
   142,311.04/196,377.42 = 78,648.82/x
3. Step 3: Cross multiply
   142,311.04x = 196,377.42 × 78,648.82
4. Step 4: Simplify right side
   142,311.04x = 15,444,852,357.64
5. Step 5: Solve for x
   x = 15,444,852,357.64/142,311.04
6. Step 6: Final answer
   x = 108,528.84