Finding the Fourth Proportional to 86,615.33, 129,931.49 and 36,003.89

Step by Step Solution

1. Step 1: Write the proportion equation
   86,615.33 : 129,931.49 = 36,003.89 : x
2. Step 2: Convert to fraction form
   86,615.33/129,931.49 = 36,003.89/x
3. Step 3: Cross multiply
   86,615.33x = 129,931.49 × 36,003.89
4. Step 4: Simplify right side
   86,615.33x = 4,678,039,488.33
5. Step 5: Solve for x
   x = 4,678,039,488.33/86,615.33
6. Step 6: Final answer
   x = 54,009.37