Finding the Fourth Proportional to 111,145.39, 153,398.57 and 82,654.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111,145.39 : 153,398.57 = 82,654.25 : x
2. Step 2: Convert to fraction form
   111,145.39/153,398.57 = 82,654.25/x
3. Step 3: Cross multiply
   111,145.39x = 153,398.57 × 82,654.25
4. Step 4: Simplify right side
   111,145.39x = 12,679,043,586.75
5. Step 5: Solve for x
   x = 12,679,043,586.75/111,145.39
6. Step 6: Final answer
   x = 114,076.20