Finding the Fourth Proportional to 142,368.16, 196,472.16 and 78,710.05

Step by Step Solution

1. Step 1: Write the proportion equation
   142,368.16 : 196,472.16 = 78,710.05 : x
2. Step 2: Convert to fraction form
   142,368.16/196,472.16 = 78,710.05/x
3. Step 3: Cross multiply
   142,368.16x = 196,472.16 × 78,710.05
4. Step 4: Simplify right side
   142,368.16x = 15,464,333,537.21
5. Step 5: Solve for x
   x = 15,464,333,537.21/142,368.16
6. Step 6: Final answer
   x = 108,622.14