Finding the Fourth Proportional to 139,867.32, 209,852.82 and 65,027.64

Step by Step Solution

1. Step 1: Write the proportion equation
   139,867.32 : 209,852.82 = 65,027.64 : x
2. Step 2: Convert to fraction form
   139,867.32/209,852.82 = 65,027.64/x
3. Step 3: Cross multiply
   139,867.32x = 209,852.82 × 65,027.64
4. Step 4: Simplify right side
   139,867.32x = 13,646,233,631.94
5. Step 5: Solve for x
   x = 13,646,233,631.94/139,867.32
6. Step 6: Final answer
   x = 97,565.56