Finding the Fourth Proportional to 236,327.82, 354,388.05 and 86,529.30

Step by Step Solution

1. Step 1: Write the proportion equation
   236,327.82 : 354,388.05 = 86,529.30 : x
2. Step 2: Convert to fraction form
   236,327.82/354,388.05 = 86,529.30/x
3. Step 3: Cross multiply
   236,327.82x = 354,388.05 × 86,529.30
4. Step 4: Simplify right side
   236,327.82x = 30,664,949,894.87
5. Step 5: Solve for x
   x = 30,664,949,894.87/236,327.82
6. Step 6: Final answer
   x = 129,755.99