Finding the Fourth Proportional to 65,278, 90,083.88 and 35,470

Step by Step Solution

1. Step 1: Write the proportion equation
   65,278 : 90,083.88 = 35,470 : x
2. Step 2: Convert to fraction form
   65,278/90,083.88 = 35,470/x
3. Step 3: Cross multiply
   65,278x = 90,083.88 × 35,470
4. Step 4: Simplify right side
   65,278x = 3,195,275,223.60
5. Step 5: Solve for x
   x = 3,195,275,223.60/65,278
6. Step 6: Final answer
   x = 48,948.73