Finding the Fourth Proportional to 117,885.48, 162,681.78 and 64,170.33

Step by Step Solution

1. Step 1: Write the proportion equation
   117,885.48 : 162,681.78 = 64,170.33 : x
2. Step 2: Convert to fraction form
   117,885.48/162,681.78 = 64,170.33/x
3. Step 3: Cross multiply
   117,885.48x = 162,681.78 × 64,170.33
4. Step 4: Simplify right side
   117,885.48x = 10,439,343,507.59
5. Step 5: Solve for x
   x = 10,439,343,507.59/117,885.48
6. Step 6: Final answer
   x = 88,554.96