Finding the Fourth Proportional to 111,676.17, 154,149.03 and 71,498.15

Step by Step Solution

1. Step 1: Write the proportion equation
   111,676.17 : 154,149.03 = 71,498.15 : x
2. Step 2: Convert to fraction form
   111,676.17/154,149.03 = 71,498.15/x
3. Step 3: Cross multiply
   111,676.17x = 154,149.03 × 71,498.15
4. Step 4: Simplify right side
   111,676.17x = 11,021,369,698.55
5. Step 5: Solve for x
   x = 11,021,369,698.55/111,676.17
6. Step 6: Final answer
   x = 98,690.43