Finding the Fourth Proportional to 145,017, 200,123.52 and 88,440.12

Step by Step Solution

1. Step 1: Write the proportion equation
   145,017 : 200,123.52 = 88,440.12 : x
2. Step 2: Convert to fraction form
   145,017/200,123.52 = 88,440.12/x
3. Step 3: Cross multiply
   145,017x = 200,123.52 × 88,440.12
4. Step 4: Simplify right side
   145,017x = 17,698,948,123.62
5. Step 5: Solve for x
   x = 17,698,948,123.62/145,017
6. Step 6: Final answer
   x = 122,047.40