Finding the Fourth Proportional to 86,164.34, 129,221.39 and 33,561.32

Step by Step Solution

1. Step 1: Write the proportion equation
   86,164.34 : 129,221.39 = 33,561.32 : x
2. Step 2: Convert to fraction form
   86,164.34/129,221.39 = 33,561.32/x
3. Step 3: Cross multiply
   86,164.34x = 129,221.39 × 33,561.32
4. Step 4: Simplify right side
   86,164.34x = 4,336,839,858.43
5. Step 5: Solve for x
   x = 4,336,839,858.43/86,164.34
6. Step 6: Final answer
   x = 50,332.19