Finding the Fourth Proportional to 145,123.04, 200,212.56 and 83,828.72

Step by Step Solution

1. Step 1: Write the proportion equation
   145,123.04 : 200,212.56 = 83,828.72 : x
2. Step 2: Convert to fraction form
   145,123.04/200,212.56 = 83,828.72/x
3. Step 3: Cross multiply
   145,123.04x = 200,212.56 × 83,828.72
4. Step 4: Simplify right side
   145,123.04x = 16,783,562,632.72
5. Step 5: Solve for x
   x = 16,783,562,632.72/145,123.04
6. Step 6: Final answer
   x = 115,650.57