Finding the Fourth Proportional to 65,852.98, 90,877.12 and 35,638.31

Step by Step Solution

1. Step 1: Write the proportion equation
   65,852.98 : 90,877.12 = 35,638.31 : x
2. Step 2: Convert to fraction form
   65,852.98/90,877.12 = 35,638.31/x
3. Step 3: Cross multiply
   65,852.98x = 90,877.12 × 35,638.31
4. Step 4: Simplify right side
   65,852.98x = 3,238,706,341.89
5. Step 5: Solve for x
   x = 3,238,706,341.89/65,852.98
6. Step 6: Final answer
   x = 49,180.86