Finding the Fourth Proportional to 64,765.50, 89,415.27 and 42,448.38

Step by Step Solution

1. Step 1: Write the proportion equation
   64,765.50 : 89,415.27 = 42,448.38 : x
2. Step 2: Convert to fraction form
   64,765.50/89,415.27 = 42,448.38/x
3. Step 3: Cross multiply
   64,765.50x = 89,415.27 × 42,448.38
4. Step 4: Simplify right side
   64,765.50x = 3,795,533,358.76
5. Step 5: Solve for x
   x = 3,795,533,358.76/64,765.50
6. Step 6: Final answer
   x = 58,604.25