Finding the Fourth Proportional to 111,835.78, 154,333.29 and 64,086.82

Step by Step Solution

1. Step 1: Write the proportion equation
   111,835.78 : 154,333.29 = 64,086.82 : x
2. Step 2: Convert to fraction form
   111,835.78/154,333.29 = 64,086.82/x
3. Step 3: Cross multiply
   111,835.78x = 154,333.29 × 64,086.82
4. Step 4: Simplify right side
   111,835.78x = 9,890,729,776.24
5. Step 5: Solve for x
   x = 9,890,729,776.24/111,835.78
6. Step 6: Final answer
   x = 88,439.76