Finding the Fourth Proportional to 65,058.50, 89,780.79 and 35,250.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,058.50 : 89,780.79 = 35,250.50 : x
2. Step 2: Convert to fraction form
   65,058.50/89,780.79 = 35,250.50/x
3. Step 3: Cross multiply
   65,058.50x = 89,780.79 × 35,250.50
4. Step 4: Simplify right side
   65,058.50x = 3,164,817,737.90
5. Step 5: Solve for x
   x = 3,164,817,737.90/65,058.50
6. Step 6: Final answer
   x = 48,645.72