Finding the Fourth Proportional to 139,441.56, 192,457.32 and 82,842

Step by Step Solution

1. Step 1: Write the proportion equation
   139,441.56 : 192,457.32 = 82,842 : x
2. Step 2: Convert to fraction form
   139,441.56/192,457.32 = 82,842/x
3. Step 3: Cross multiply
   139,441.56x = 192,457.32 × 82,842
4. Step 4: Simplify right side
   139,441.56x = 15,943,549,303.44
5. Step 5: Solve for x
   x = 15,943,549,303.44/139,441.56
6. Step 6: Final answer
   x = 114,338.58