Finding the Fourth Proportional to 117,883.78, 162,681.69 and 64,170.34

Step by Step Solution

1. Step 1: Write the proportion equation
   117,883.78 : 162,681.69 = 64,170.34 : x
2. Step 2: Convert to fraction form
   117,883.78/162,681.69 = 64,170.34/x
3. Step 3: Cross multiply
   117,883.78x = 162,681.69 × 64,170.34
4. Step 4: Simplify right side
   117,883.78x = 10,439,339,359.07
5. Step 5: Solve for x
   x = 10,439,339,359.07/117,883.78
6. Step 6: Final answer
   x = 88,556.20