Finding the Fourth Proportional to 99,940.69, 149,181.89 and 87,329.26

Step by Step Solution

1. Step 1: Write the proportion equation
   99,940.69 : 149,181.89 = 87,329.26 : x
2. Step 2: Convert to fraction form
   99,940.69/149,181.89 = 87,329.26/x
3. Step 3: Cross multiply
   99,940.69x = 149,181.89 × 87,329.26
4. Step 4: Simplify right side
   99,940.69x = 13,027,944,059.10
5. Step 5: Solve for x
   x = 13,027,944,059.10/99,940.69
6. Step 6: Final answer
   x = 130,356.76