Finding the Fourth Proportional to 65,028.06, 89,682.57 and 42,358.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,028.06 : 89,682.57 = 42,358.50 : x
2. Step 2: Convert to fraction form
   65,028.06/89,682.57 = 42,358.50/x
3. Step 3: Cross multiply
   65,028.06x = 89,682.57 × 42,358.50
4. Step 4: Simplify right side
   65,028.06x = 3,798,819,141.35
5. Step 5: Solve for x
   x = 3,798,819,141.35/65,028.06
6. Step 6: Final answer
   x = 58,418.15