Finding the Fourth Proportional to 139,665.30, 192,834.54 and 130,742.34

Step by Step Solution

1. Step 1: Write the proportion equation
   139,665.30 : 192,834.54 = 130,742.34 : x
2. Step 2: Convert to fraction form
   139,665.30/192,834.54 = 130,742.34/x
3. Step 3: Cross multiply
   139,665.30x = 192,834.54 × 130,742.34
4. Step 4: Simplify right side
   139,665.30x = 25,211,638,992.42
5. Step 5: Solve for x
   x = 25,211,638,992.42/139,665.30
6. Step 6: Final answer
   x = 180,514.69