Finding the Fourth Proportional to 65,215.48, 89,965.32 and 42,544

Step by Step Solution

1. Step 1: Write the proportion equation
   65,215.48 : 89,965.32 = 42,544 : x
2. Step 2: Convert to fraction form
   65,215.48/89,965.32 = 42,544/x
3. Step 3: Cross multiply
   65,215.48x = 89,965.32 × 42,544
4. Step 4: Simplify right side
   65,215.48x = 3,827,484,574.08
5. Step 5: Solve for x
   x = 3,827,484,574.08/65,215.48
6. Step 6: Final answer
   x = 58,689.82