Finding the Fourth Proportional to 139,732.18, 192,856.98 and 79,308.48

Step by Step Solution

1. Step 1: Write the proportion equation
   139,732.18 : 192,856.98 = 79,308.48 : x
2. Step 2: Convert to fraction form
   139,732.18/192,856.98 = 79,308.48/x
3. Step 3: Cross multiply
   139,732.18x = 192,856.98 × 79,308.48
4. Step 4: Simplify right side
   139,732.18x = 15,295,193,941.19
5. Step 5: Solve for x
   x = 15,295,193,941.19/139,732.18
6. Step 6: Final answer
   x = 109,460.78