Finding the Fourth Proportional to 117,855.33, 162,637.23 and 64,139.19

Step by Step Solution

1. Step 1: Write the proportion equation
   117,855.33 : 162,637.23 = 64,139.19 : x
2. Step 2: Convert to fraction form
   117,855.33/162,637.23 = 64,139.19/x
3. Step 3: Cross multiply
   117,855.33x = 162,637.23 × 64,139.19
4. Step 4: Simplify right side
   117,855.33x = 10,431,420,196.04
5. Step 5: Solve for x
   x = 10,431,420,196.04/117,855.33
6. Step 6: Final answer
   x = 88,510.38