Finding the Fourth Proportional to 85,946.98, 118,625.42 and 65,581.98

Step by Step Solution

1. Step 1: Write the proportion equation
   85,946.98 : 118,625.42 = 65,581.98 : x
2. Step 2: Convert to fraction form
   85,946.98/118,625.42 = 65,581.98/x
3. Step 3: Cross multiply
   85,946.98x = 118,625.42 × 65,581.98
4. Step 4: Simplify right side
   85,946.98x = 7,779,689,921.93
5. Step 5: Solve for x
   x = 7,779,689,921.93/85,946.98
6. Step 6: Final answer
   x = 90,517.32