Finding the Fourth Proportional to 65,105.82, 89,883.68 and 43,319.21

Step by Step Solution

1. Step 1: Write the proportion equation
   65,105.82 : 89,883.68 = 43,319.21 : x
2. Step 2: Convert to fraction form
   65,105.82/89,883.68 = 43,319.21/x
3. Step 3: Cross multiply
   65,105.82x = 89,883.68 × 43,319.21
4. Step 4: Simplify right side
   65,105.82x = 3,893,689,343.48
5. Step 5: Solve for x
   x = 3,893,689,343.48/65,105.82
6. Step 6: Final answer
   x = 59,805.55