Finding the Fourth Proportional to 118,229.69, 163,157.39 and 64,515.89

Step by Step Solution

1. Step 1: Write the proportion equation
   118,229.69 : 163,157.39 = 64,515.89 : x
2. Step 2: Convert to fraction form
   118,229.69/163,157.39 = 64,515.89/x
3. Step 3: Cross multiply
   118,229.69x = 163,157.39 × 64,515.89
4. Step 4: Simplify right side
   118,229.69x = 10,526,243,087.56
5. Step 5: Solve for x
   x = 10,526,243,087.56/118,229.69
6. Step 6: Final answer
   x = 89,032.15