Finding the Fourth Proportional to 65,191.12, 89,965.02 and 42,544.60

Step by Step Solution

1. Step 1: Write the proportion equation
   65,191.12 : 89,965.02 = 42,544.60 : x
2. Step 2: Convert to fraction form
   65,191.12/89,965.02 = 42,544.60/x
3. Step 3: Cross multiply
   65,191.12x = 89,965.02 × 42,544.60
4. Step 4: Simplify right side
   65,191.12x = 3,827,525,789.89
5. Step 5: Solve for x
   x = 3,827,525,789.89/65,191.12
6. Step 6: Final answer
   x = 58,712.38