Finding the Fourth Proportional to 118,631.52, 163,711.49 and 64,916.54

Step by Step Solution

1. Step 1: Write the proportion equation
   118,631.52 : 163,711.49 = 64,916.54 : x
2. Step 2: Convert to fraction form
   118,631.52/163,711.49 = 64,916.54/x
3. Step 3: Cross multiply
   118,631.52x = 163,711.49 × 64,916.54
4. Step 4: Simplify right side
   118,631.52x = 10,627,582,832.78
5. Step 5: Solve for x
   x = 10,627,582,832.78/118,631.52
6. Step 6: Final answer
   x = 89,584.82