Finding the Fourth Proportional to 139,667.86, 192,735.94 and 76,005.70

Step by Step Solution

1. Step 1: Write the proportion equation
   139,667.86 : 192,735.94 = 76,005.70 : x
2. Step 2: Convert to fraction form
   139,667.86/192,735.94 = 76,005.70/x
3. Step 3: Cross multiply
   139,667.86x = 192,735.94 × 76,005.70
4. Step 4: Simplify right side
   139,667.86x = 14,649,030,034.86
5. Step 5: Solve for x
   x = 14,649,030,034.86/139,667.86
6. Step 6: Final answer
   x = 104,884.76