Finding the Fourth Proportional to 111,932.91, 154,478.31 and 83,589.39

Step by Step Solution

1. Step 1: Write the proportion equation
   111,932.91 : 154,478.31 = 83,589.39 : x
2. Step 2: Convert to fraction form
   111,932.91/154,478.31 = 83,589.39/x
3. Step 3: Cross multiply
   111,932.91x = 154,478.31 × 83,589.39
4. Step 4: Simplify right side
   111,932.91x = 12,912,747,701.13
5. Step 5: Solve for x
   x = 12,912,747,701.13/111,932.91
6. Step 6: Final answer
   x = 115,361.49