Finding the Fourth Proportional to 111,848.72, 154,325.84 and 81,650.48

Step by Step Solution

1. Step 1: Write the proportion equation
   111,848.72 : 154,325.84 = 81,650.48 : x
2. Step 2: Convert to fraction form
   111,848.72/154,325.84 = 81,650.48/x
3. Step 3: Cross multiply
   111,848.72x = 154,325.84 × 81,650.48
4. Step 4: Simplify right side
   111,848.72x = 12,600,778,912.40
5. Step 5: Solve for x
   x = 12,600,778,912.40/111,848.72
6. Step 6: Final answer
   x = 112,659.12