Finding the Fourth Proportional to 145,978.76, 201,457.59 and 82,315.19

Step by Step Solution

1. Step 1: Write the proportion equation
   145,978.76 : 201,457.59 = 82,315.19 : x
2. Step 2: Convert to fraction form
   145,978.76/201,457.59 = 82,315.19/x
3. Step 3: Cross multiply
   145,978.76x = 201,457.59 × 82,315.19
4. Step 4: Simplify right side
   145,978.76x = 16,583,019,797.79
5. Step 5: Solve for x
   x = 16,583,019,797.79/145,978.76
6. Step 6: Final answer
   x = 113,598.85