Finding the Fourth Proportional to 139,164.28, 192,035.00 and 81,805.42

Step by Step Solution

1. Step 1: Write the proportion equation
   139,164.28 : 192,035.00 = 81,805.42 : x
2. Step 2: Convert to fraction form
   139,164.28/192,035.00 = 81,805.42/x
3. Step 3: Cross multiply
   139,164.28x = 192,035.00 × 81,805.42
4. Step 4: Simplify right side
   139,164.28x = 15,709,503,734.16
5. Step 5: Solve for x
   x = 15,709,503,734.16/139,164.28
6. Step 6: Final answer
   x = 112,884.60