Finding the Fourth Proportional to 65,884.79, 90,920.35 and 35,669.31

Step by Step Solution

1. Step 1: Write the proportion equation
   65,884.79 : 90,920.35 = 35,669.31 : x
2. Step 2: Convert to fraction form
   65,884.79/90,920.35 = 35,669.31/x
3. Step 3: Cross multiply
   65,884.79x = 90,920.35 × 35,669.31
4. Step 4: Simplify right side
   65,884.79x = 3,243,066,149.46
5. Step 5: Solve for x
   x = 3,243,066,149.46/65,884.79
6. Step 6: Final answer
   x = 49,223.29