Finding the Fourth Proportional to 111,914.12, 154,456.25 and 64,158.23

Step by Step Solution

1. Step 1: Write the proportion equation
   111,914.12 : 154,456.25 = 64,158.23 : x
2. Step 2: Convert to fraction form
   111,914.12/154,456.25 = 64,158.23/x
3. Step 3: Cross multiply
   111,914.12x = 154,456.25 × 64,158.23
4. Step 4: Simplify right side
   111,914.12x = 9,909,639,612.44
5. Step 5: Solve for x
   x = 9,909,639,612.44/111,914.12
6. Step 6: Final answer
   x = 88,546.82