Finding the Fourth Proportional to 159,406.34, 220,086.62 and 99,067.02

Step by Step Solution

1. Step 1: Write the proportion equation
   159,406.34 : 220,086.62 = 99,067.02 : x
2. Step 2: Convert to fraction form
   159,406.34/220,086.62 = 99,067.02/x
3. Step 3: Cross multiply
   159,406.34x = 220,086.62 × 99,067.02
4. Step 4: Simplify right side
   159,406.34x = 21,803,325,585.27
5. Step 5: Solve for x
   x = 21,803,325,585.27/159,406.34
6. Step 6: Final answer
   x = 136,778.28