Finding the Fourth Proportional to 139,663.30, 192,831.78 and 130,740.34

Step by Step Solution

1. Step 1: Write the proportion equation
   139,663.30 : 192,831.78 = 130,740.34 : x
2. Step 2: Convert to fraction form
   139,663.30/192,831.78 = 130,740.34/x
3. Step 3: Cross multiply
   139,663.30x = 192,831.78 × 130,740.34
4. Step 4: Simplify right side
   139,663.30x = 25,210,892,480.01
5. Step 5: Solve for x
   x = 25,210,892,480.01/139,663.30
6. Step 6: Final answer
   x = 180,511.93