Finding the Fourth Proportional to 65,217.98, 89,968.76 and 42,546.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,217.98 : 89,968.76 = 42,546.50 : x
2. Step 2: Convert to fraction form
   65,217.98/89,968.76 = 42,546.50/x
3. Step 3: Cross multiply
   65,217.98x = 89,968.76 × 42,546.50
4. Step 4: Simplify right side
   65,217.98x = 3,827,855,847.34
5. Step 5: Solve for x
   x = 3,827,855,847.34/65,217.98
6. Step 6: Final answer
   x = 58,693.26