Finding the Fourth Proportional to 139,362.78, 192,400.44 and 91,754.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,362.78 : 192,400.44 = 91,754.52 : x
2. Step 2: Convert to fraction form
   139,362.78/192,400.44 = 91,754.52/x
3. Step 3: Cross multiply
   139,362.78x = 192,400.44 × 91,754.52
4. Step 4: Simplify right side
   139,362.78x = 17,653,610,019.99
5. Step 5: Solve for x
   x = 17,653,610,019.99/139,362.78
6. Step 6: Final answer
   x = 126,673.78