Finding the Fourth Proportional to 197,443.67, 272,448.79 and 111,397.62

Step by Step Solution

1. Step 1: Write the proportion equation
   197,443.67 : 272,448.79 = 111,397.62 : x
2. Step 2: Convert to fraction form
   197,443.67/272,448.79 = 111,397.62/x
3. Step 3: Cross multiply
   197,443.67x = 272,448.79 × 111,397.62
4. Step 4: Simplify right side
   197,443.67x = 30,350,146,499.39
5. Step 5: Solve for x
   x = 30,350,146,499.39/197,443.67
6. Step 6: Final answer
   x = 153,715.47