Finding the Fourth Proportional to 145,300.16, 200,513.60 and 80,768.96

Step by Step Solution

1. Step 1: Write the proportion equation
   145,300.16 : 200,513.60 = 80,768.96 : x
2. Step 2: Convert to fraction form
   145,300.16/200,513.60 = 80,768.96/x
3. Step 3: Cross multiply
   145,300.16x = 200,513.60 × 80,768.96
4. Step 4: Simplify right side
   145,300.16x = 16,195,274,937.86
5. Step 5: Solve for x
   x = 16,195,274,937.86/145,300.16
6. Step 6: Final answer
   x = 111,460.82