Finding the Fourth Proportional to 139,816.20, 192,931.78 and 83,216.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,816.20 : 192,931.78 = 83,216.52 : x
2. Step 2: Convert to fraction form
   139,816.20/192,931.78 = 83,216.52/x
3. Step 3: Cross multiply
   139,816.20x = 192,931.78 × 83,216.52
4. Step 4: Simplify right side
   139,816.20x = 16,055,111,329.01
5. Step 5: Solve for x
   x = 16,055,111,329.01/139,816.20
6. Step 6: Final answer
   x = 114,830.12