Finding the Fourth Proportional to 139,541.52, 192,575.70 and 82,219.05

Step by Step Solution

1. Step 1: Write the proportion equation
   139,541.52 : 192,575.70 = 82,219.05 : x
2. Step 2: Convert to fraction form
   139,541.52/192,575.70 = 82,219.05/x
3. Step 3: Cross multiply
   139,541.52x = 192,575.70 × 82,219.05
4. Step 4: Simplify right side
   139,541.52x = 15,833,390,144.21
5. Step 5: Solve for x
   x = 15,833,390,144.21/139,541.52
6. Step 6: Final answer
   x = 113,467.23