Finding the Fourth Proportional to 142,603.96, 196,795.02 and 78,942.88

Step by Step Solution

1. Step 1: Write the proportion equation
   142,603.96 : 196,795.02 = 78,942.88 : x
2. Step 2: Convert to fraction form
   142,603.96/196,795.02 = 78,942.88/x
3. Step 3: Cross multiply
   142,603.96x = 196,795.02 × 78,942.88
4. Step 4: Simplify right side
   142,603.96x = 15,535,565,648.46
5. Step 5: Solve for x
   x = 15,535,565,648.46/142,603.96
6. Step 6: Final answer
   x = 108,942.04