Finding the Fourth Proportional to 139,377.45, 192,371.49 and 91,635.24

Step by Step Solution

1. Step 1: Write the proportion equation
   139,377.45 : 192,371.49 = 91,635.24 : x
2. Step 2: Convert to fraction form
   139,377.45/192,371.49 = 91,635.24/x
3. Step 3: Cross multiply
   139,377.45x = 192,371.49 × 91,635.24
4. Step 4: Simplify right side
   139,377.45x = 17,628,007,655.31
5. Step 5: Solve for x
   x = 17,628,007,655.31/139,377.45
6. Step 6: Final answer
   x = 126,476.76