Finding the Fourth Proportional to 139,286.28, 192,209.82 and 75,622.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,286.28 : 192,209.82 = 75,622.72 : x
2. Step 2: Convert to fraction form
   139,286.28/192,209.82 = 75,622.72/x
3. Step 3: Cross multiply
   139,286.28x = 192,209.82 × 75,622.72
4. Step 4: Simplify right side
   139,286.28x = 14,535,429,399.11
5. Step 5: Solve for x
   x = 14,535,429,399.11/139,286.28
6. Step 6: Final answer
   x = 104,356.51