Finding the Fourth Proportional to 65,105.76, 89,848.50 and 38,248.05

Step by Step Solution

1. Step 1: Write the proportion equation
   65,105.76 : 89,848.50 = 38,248.05 : x
2. Step 2: Convert to fraction form
   65,105.76/89,848.50 = 38,248.05/x
3. Step 3: Cross multiply
   65,105.76x = 89,848.50 × 38,248.05
4. Step 4: Simplify right side
   65,105.76x = 3,436,529,920.43
5. Step 5: Solve for x
   x = 3,436,529,920.43/65,105.76
6. Step 6: Final answer
   x = 52,783.81