Finding the Fourth Proportional to 85,103.82, 117,457.30 and 64,922.60

Step by Step Solution

1. Step 1: Write the proportion equation
   85,103.82 : 117,457.30 = 64,922.60 : x
2. Step 2: Convert to fraction form
   85,103.82/117,457.30 = 64,922.60/x
3. Step 3: Cross multiply
   85,103.82x = 117,457.30 × 64,922.60
4. Step 4: Simplify right side
   85,103.82x = 7,625,633,304.98
5. Step 5: Solve for x
   x = 7,625,633,304.98/85,103.82
6. Step 6: Final answer
   x = 89,603.89