Finding the Fourth Proportional to 118,020.89, 162,864.25 and 64,306.31

Step by Step Solution

1. Step 1: Write the proportion equation
   118,020.89 : 162,864.25 = 64,306.31 : x
2. Step 2: Convert to fraction form
   118,020.89/162,864.25 = 64,306.31/x
3. Step 3: Cross multiply
   118,020.89x = 162,864.25 × 64,306.31
4. Step 4: Simplify right side
   118,020.89x = 10,473,197,973.33
5. Step 5: Solve for x
   x = 10,473,197,973.33/118,020.89
6. Step 6: Final answer
   x = 88,740.21