Finding the Fourth Proportional to 139,814.10, 192,952.53 and 83,217.78

Step by Step Solution

1. Step 1: Write the proportion equation
   139,814.10 : 192,952.53 = 83,217.78 : x
2. Step 2: Convert to fraction form
   139,814.10/192,952.53 = 83,217.78/x
3. Step 3: Cross multiply
   139,814.10x = 192,952.53 × 83,217.78
4. Step 4: Simplify right side
   139,814.10x = 16,057,081,191.98
5. Step 5: Solve for x
   x = 16,057,081,191.98/139,814.10
6. Step 6: Final answer
   x = 114,845.94