Finding the Fourth Proportional to 103,962.89, 143,491.03 and 65,698.09

Step by Step Solution

1. Step 1: Write the proportion equation
   103,962.89 : 143,491.03 = 65,698.09 : x
2. Step 2: Convert to fraction form
   103,962.89/143,491.03 = 65,698.09/x
3. Step 3: Cross multiply
   103,962.89x = 143,491.03 × 65,698.09
4. Step 4: Simplify right side
   103,962.89x = 9,427,086,080.16
5. Step 5: Solve for x
   x = 9,427,086,080.16/103,962.89
6. Step 6: Final answer
   x = 90,677.41