Finding the Fourth Proportional to 86,636.77, 130,007.00 and 79,586.53

Step by Step Solution

1. Step 1: Write the proportion equation
   86,636.77 : 130,007.00 = 79,586.53 : x
2. Step 2: Convert to fraction form
   86,636.77/130,007.00 = 79,586.53/x
3. Step 3: Cross multiply
   86,636.77x = 130,007.00 × 79,586.53
4. Step 4: Simplify right side
   86,636.77x = 10,346,805,607.78
5. Step 5: Solve for x
   x = 10,346,805,607.78/86,636.77
6. Step 6: Final answer
   x = 119,427.42