Finding the Fourth Proportional to 86,619.83, 129,938.27 and 36,008.42

Step by Step Solution

1. Step 1: Write the proportion equation
   86,619.83 : 129,938.27 = 36,008.42 : x
2. Step 2: Convert to fraction form
   86,619.83/129,938.27 = 36,008.42/x
3. Step 3: Cross multiply
   86,619.83x = 129,938.27 × 36,008.42
4. Step 4: Simplify right side
   86,619.83x = 4,678,870,970.50
5. Step 5: Solve for x
   x = 4,678,870,970.50/86,619.83
6. Step 6: Final answer
   x = 54,016.17