Finding the Fourth Proportional to 142,264.99, 196,333.56 and 78,601.42

Step by Step Solution

1. Step 1: Write the proportion equation
   142,264.99 : 196,333.56 = 78,601.42 : x
2. Step 2: Convert to fraction form
   142,264.99/196,333.56 = 78,601.42/x
3. Step 3: Cross multiply
   142,264.99x = 196,333.56 × 78,601.42
4. Step 4: Simplify right side
   142,264.99x = 15,432,095,234.98
5. Step 5: Solve for x
   x = 15,432,095,234.98/142,264.99
6. Step 6: Final answer
   x = 108,474.30