Finding the Fourth Proportional to 99,986.52, 150,042.42 and 53,270.04

Step by Step Solution

1. Step 1: Write the proportion equation
   99,986.52 : 150,042.42 = 53,270.04 : x
2. Step 2: Convert to fraction form
   99,986.52/150,042.42 = 53,270.04/x
3. Step 3: Cross multiply
   99,986.52x = 150,042.42 × 53,270.04
4. Step 4: Simplify right side
   99,986.52x = 7,992,765,715.10
5. Step 5: Solve for x
   x = 7,992,765,715.10/99,986.52
6. Step 6: Final answer
   x = 79,938.43