Finding the Fourth Proportional to 139,680.32, 192,762.86 and 76,022.15

Step by Step Solution

1. Step 1: Write the proportion equation
   139,680.32 : 192,762.86 = 76,022.15 : x
2. Step 2: Convert to fraction form
   139,680.32/192,762.86 = 76,022.15/x
3. Step 3: Cross multiply
   139,680.32x = 192,762.86 × 76,022.15
4. Step 4: Simplify right side
   139,680.32x = 14,654,245,713.42
5. Step 5: Solve for x
   x = 14,654,245,713.42/139,680.32
6. Step 6: Final answer
   x = 104,912.75