Finding the Fourth Proportional to 118,630.73, 163,710.41 and 64,915.75

Step by Step Solution

1. Step 1: Write the proportion equation
   118,630.73 : 163,710.41 = 64,915.75 : x
2. Step 2: Convert to fraction form
   118,630.73/163,710.41 = 64,915.75/x
3. Step 3: Cross multiply
   118,630.73x = 163,710.41 × 64,915.75
4. Step 4: Simplify right side
   118,630.73x = 10,627,384,047.96
5. Step 5: Solve for x
   x = 10,627,384,047.96/118,630.73
6. Step 6: Final answer
   x = 89,583.74