Finding the Fourth Proportional to 216,105.18, 297,868.20 and 144,459.06

Step by Step Solution

1. Step 1: Write the proportion equation
   216,105.18 : 297,868.20 = 144,459.06 : x
2. Step 2: Convert to fraction form
   216,105.18/297,868.20 = 144,459.06/x
3. Step 3: Cross multiply
   216,105.18x = 297,868.20 × 144,459.06
4. Step 4: Simplify right side
   216,105.18x = 43,029,760,175.89
5. Step 5: Solve for x
   x = 43,029,760,175.89/216,105.18
6. Step 6: Final answer
   x = 199,114.89