Finding the Fourth Proportional to 103,868.82, 143,457.20 and 69,818.20

Step by Step Solution

1. Step 1: Write the proportion equation
   103,868.82 : 143,457.20 = 69,818.20 : x
2. Step 2: Convert to fraction form
   103,868.82/143,457.20 = 69,818.20/x
3. Step 3: Cross multiply
   103,868.82x = 143,457.20 × 69,818.20
4. Step 4: Simplify right side
   103,868.82x = 10,015,923,481.04
5. Step 5: Solve for x
   x = 10,015,923,481.04/103,868.82
6. Step 6: Final answer
   x = 96,428.59