Finding the Fourth Proportional to 139,117.41, 208,651.86 and 64,231.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,117.41 : 208,651.86 = 64,231.16 : x
2. Step 2: Convert to fraction form
   139,117.41/208,651.86 = 64,231.16/x
3. Step 3: Cross multiply
   139,117.41x = 208,651.86 × 64,231.16
4. Step 4: Simplify right side
   139,117.41x = 13,401,949,960.70
5. Step 5: Solve for x
   x = 13,401,949,960.70/139,117.41
6. Step 6: Final answer
   x = 96,335.53