Finding the Fourth Proportional to 118,631.27, 163,711.15 and 64,916.29

Step by Step Solution

1. Step 1: Write the proportion equation
   118,631.27 : 163,711.15 = 64,916.29 : x
2. Step 2: Convert to fraction form
   118,631.27/163,711.15 = 64,916.29/x
3. Step 3: Cross multiply
   118,631.27x = 163,711.15 × 64,916.29
4. Step 4: Simplify right side
   118,631.27x = 10,627,520,165.05
5. Step 5: Solve for x
   x = 10,627,520,165.05/118,631.27
6. Step 6: Final answer
   x = 89,584.48