Finding the Fourth Proportional to 65,164.73, 89,930.84 and 39,667.05

Step by Step Solution

1. Step 1: Write the proportion equation
   65,164.73 : 89,930.84 = 39,667.05 : x
2. Step 2: Convert to fraction form
   65,164.73/89,930.84 = 39,667.05/x
3. Step 3: Cross multiply
   65,164.73x = 89,930.84 × 39,667.05
4. Step 4: Simplify right side
   65,164.73x = 3,567,290,928.49
5. Step 5: Solve for x
   x = 3,567,290,928.49/65,164.73
6. Step 6: Final answer
   x = 54,742.67