Finding the Fourth Proportional to 159,404.34, 220,083.85 and 99,065.01

Step by Step Solution

1. Step 1: Write the proportion equation
   159,404.34 : 220,083.85 = 99,065.01 : x
2. Step 2: Convert to fraction form
   159,404.34/220,083.85 = 99,065.01/x
3. Step 3: Cross multiply
   159,404.34x = 220,083.85 × 99,065.01
4. Step 4: Simplify right side
   159,404.34x = 21,802,608,801.09
5. Step 5: Solve for x
   x = 21,802,608,801.09/159,404.34
6. Step 6: Final answer
   x = 136,775.50