Finding the Fourth Proportional to 85,945.98, 118,624.04 and 65,580.98

Step by Step Solution

1. Step 1: Write the proportion equation
   85,945.98 : 118,624.04 = 65,580.98 : x
2. Step 2: Convert to fraction form
   85,945.98/118,624.04 = 65,580.98/x
3. Step 3: Cross multiply
   85,945.98x = 118,624.04 × 65,580.98
4. Step 4: Simplify right side
   85,945.98x = 7,779,479,873.73
5. Step 5: Solve for x
   x = 7,779,479,873.73/85,945.98
6. Step 6: Final answer
   x = 90,515.92