Finding the Fourth Proportional to 111,820.61, 154,311.17 and 83,267.97

Step by Step Solution

1. Step 1: Write the proportion equation
   111,820.61 : 154,311.17 = 83,267.97 : x
2. Step 2: Convert to fraction form
   111,820.61/154,311.17 = 83,267.97/x
3. Step 3: Cross multiply
   111,820.61x = 154,311.17 × 83,267.97
4. Step 4: Simplify right side
   111,820.61x = 12,849,177,457.89
5. Step 5: Solve for x
   x = 12,849,177,457.89/111,820.61
6. Step 6: Final answer
   x = 114,908.85