Finding the Fourth Proportional to 65,044.56, 89,705.28 and 42,375

Step by Step Solution

1. Step 1: Write the proportion equation
   65,044.56 : 89,705.28 = 42,375 : x
2. Step 2: Convert to fraction form
   65,044.56/89,705.28 = 42,375/x
3. Step 3: Cross multiply
   65,044.56x = 89,705.28 × 42,375
4. Step 4: Simplify right side
   65,044.56x = 3,801,261,240
5. Step 5: Solve for x
   x = 3,801,261,240/65,044.56
6. Step 6: Final answer
   x = 58,440.88