Finding the Fourth Proportional to 131,443.32, 181,476.54 and 117,271.56

Step by Step Solution

1. Step 1: Write the proportion equation
   131,443.32 : 181,476.54 = 117,271.56 : x
2. Step 2: Convert to fraction form
   131,443.32/181,476.54 = 117,271.56/x
3. Step 3: Cross multiply
   131,443.32x = 181,476.54 × 117,271.56
4. Step 4: Simplify right side
   131,443.32x = 21,282,036,949.20
5. Step 5: Solve for x
   x = 21,282,036,949.20/131,443.32
6. Step 6: Final answer
   x = 161,910.37