Finding the Fourth Proportional to 65,399.50, 90,283.31 and 43,881.55

Step by Step Solution

1. Step 1: Write the proportion equation
   65,399.50 : 90,283.31 = 43,881.55 : x
2. Step 2: Convert to fraction form
   65,399.50/90,283.31 = 43,881.55/x
3. Step 3: Cross multiply
   65,399.50x = 90,283.31 × 43,881.55
4. Step 4: Simplify right side
   65,399.50x = 3,961,771,301.37
5. Step 5: Solve for x
   x = 3,961,771,301.37/65,399.50
6. Step 6: Final answer
   x = 60,578.00