Finding the Fourth Proportional to 139,906.32, 209,911.32 and 65,066.64

Step by Step Solution

1. Step 1: Write the proportion equation
   139,906.32 : 209,911.32 = 65,066.64 : x
2. Step 2: Convert to fraction form
   139,906.32/209,911.32 = 65,066.64/x
3. Step 3: Cross multiply
   139,906.32x = 209,911.32 × 65,066.64
4. Step 4: Simplify right side
   139,906.32x = 13,658,224,290.36
5. Step 5: Solve for x
   x = 13,658,224,290.36/139,906.32
6. Step 6: Final answer
   x = 97,624.07