Finding the Fourth Proportional to 118,056.69, 162,913.46 and 64,340.55

Step by Step Solution

1. Step 1: Write the proportion equation
   118,056.69 : 162,913.46 = 64,340.55 : x
2. Step 2: Convert to fraction form
   118,056.69/162,913.46 = 64,340.55/x
3. Step 3: Cross multiply
   118,056.69x = 162,913.46 × 64,340.55
4. Step 4: Simplify right side
   118,056.69x = 10,481,941,297.10
5. Step 5: Solve for x
   x = 10,481,941,297.10/118,056.69
6. Step 6: Final answer
   x = 88,787.36