Finding the Fourth Proportional to 118,103.81, 162,984.21 and 64,389.21

Step by Step Solution

1. Step 1: Write the proportion equation
   118,103.81 : 162,984.21 = 64,389.21 : x
2. Step 2: Convert to fraction form
   118,103.81/162,984.21 = 64,389.21/x
3. Step 3: Cross multiply
   118,103.81x = 162,984.21 × 64,389.21
4. Step 4: Simplify right side
   118,103.81x = 10,494,424,493.72
5. Step 5: Solve for x
   x = 10,494,424,493.72/118,103.81
6. Step 6: Final answer
   x = 88,857.63