Finding the Fourth Proportional to 142,046.37, 196,006.50 and 78,384.15

Step by Step Solution

1. Step 1: Write the proportion equation
   142,046.37 : 196,006.50 = 78,384.15 : x
2. Step 2: Convert to fraction form
   142,046.37/196,006.50 = 78,384.15/x
3. Step 3: Cross multiply
   142,046.37x = 196,006.50 × 78,384.15
4. Step 4: Simplify right side
   142,046.37x = 15,363,802,896.98
5. Step 5: Solve for x
   x = 15,363,802,896.98/142,046.37
6. Step 6: Final answer
   x = 108,160.48