Finding the Fourth Proportional to 139,532.44, 209,293.91 and 60,646.67

Step by Step Solution

1. Step 1: Write the proportion equation
   139,532.44 : 209,293.91 = 60,646.67 : x
2. Step 2: Convert to fraction form
   139,532.44/209,293.91 = 60,646.67/x
3. Step 3: Cross multiply
   139,532.44x = 209,293.91 × 60,646.67
4. Step 4: Simplify right side
   139,532.44x = 12,692,978,389.55
5. Step 5: Solve for x
   x = 12,692,978,389.55/139,532.44
6. Step 6: Final answer
   x = 90,967.94