Finding the Fourth Proportional to 86,239, 129,359.09 and 32,916.60

Step by Step Solution

1. Step 1: Write the proportion equation
   86,239 : 129,359.09 = 32,916.60 : x
2. Step 2: Convert to fraction form
   86,239/129,359.09 = 32,916.60/x
3. Step 3: Cross multiply
   86,239x = 129,359.09 × 32,916.60
4. Step 4: Simplify right side
   86,239x = 4,258,061,421.89
5. Step 5: Solve for x
   x = 4,258,061,421.89/86,239
6. Step 6: Final answer
   x = 49,375.13