Finding the Fourth Proportional to 65,137.46, 89,892.25 and 42,491.48

Step by Step Solution

1. Step 1: Write the proportion equation
   65,137.46 : 89,892.25 = 42,491.48 : x
2. Step 2: Convert to fraction form
   65,137.46/89,892.25 = 42,491.48/x
3. Step 3: Cross multiply
   65,137.46x = 89,892.25 × 42,491.48
4. Step 4: Simplify right side
   65,137.46x = 3,819,654,187.34
5. Step 5: Solve for x
   x = 3,819,654,187.34/65,137.46
6. Step 6: Final answer
   x = 58,639.91