Finding the Fourth Proportional to 116,124.78, 160,258.50 and 65,153.64

Step by Step Solution

1. Step 1: Write the proportion equation
   116,124.78 : 160,258.50 = 65,153.64 : x
2. Step 2: Convert to fraction form
   116,124.78/160,258.50 = 65,153.64/x
3. Step 3: Cross multiply
   116,124.78x = 160,258.50 × 65,153.64
4. Step 4: Simplify right side
   116,124.78x = 10,441,424,615.94
5. Step 5: Solve for x
   x = 10,441,424,615.94/116,124.78
6. Step 6: Final answer
   x = 89,915.56