Finding the Fourth Proportional to 145,978.56, 201,450.78 and 82,317.42

Step by Step Solution

1. Step 1: Write the proportion equation
   145,978.56 : 201,450.78 = 82,317.42 : x
2. Step 2: Convert to fraction form
   145,978.56/201,450.78 = 82,317.42/x
3. Step 3: Cross multiply
   145,978.56x = 201,450.78 × 82,317.42
4. Step 4: Simplify right side
   145,978.56x = 16,582,908,466.59
5. Step 5: Solve for x
   x = 16,582,908,466.59/145,978.56
6. Step 6: Final answer
   x = 113,598.25