Finding the Fourth Proportional to 65,248.96, 90,043.60 and 35,440.96

Step by Step Solution

1. Step 1: Write the proportion equation
   65,248.96 : 90,043.60 = 35,440.96 : x
2. Step 2: Convert to fraction form
   65,248.96/90,043.60 = 35,440.96/x
3. Step 3: Cross multiply
   65,248.96x = 90,043.60 × 35,440.96
4. Step 4: Simplify right side
   65,248.96x = 3,191,231,625.86
5. Step 5: Solve for x
   x = 3,191,231,625.86/65,248.96
6. Step 6: Final answer
   x = 48,908.54