Finding the Fourth Proportional to 65,191.25, 89,965.20 and 42,544.73

Step by Step Solution

1. Step 1: Write the proportion equation
   65,191.25 : 89,965.20 = 42,544.73 : x
2. Step 2: Convert to fraction form
   65,191.25/89,965.20 = 42,544.73/x
3. Step 3: Cross multiply
   65,191.25x = 89,965.20 × 42,544.73
4. Step 4: Simplify right side
   65,191.25x = 3,827,544,693.57
5. Step 5: Solve for x
   x = 3,827,544,693.57/65,191.25
6. Step 6: Final answer
   x = 58,712.56