Finding the Fourth Proportional to 116,173.25, 160,312.43 and 64,487.69

Step by Step Solution

1. Step 1: Write the proportion equation
   116,173.25 : 160,312.43 = 64,487.69 : x
2. Step 2: Convert to fraction form
   116,173.25/160,312.43 = 64,487.69/x
3. Step 3: Cross multiply
   116,173.25x = 160,312.43 × 64,487.69
4. Step 4: Simplify right side
   116,173.25x = 10,338,177,648.64
5. Step 5: Solve for x
   x = 10,338,177,648.64/116,173.25
6. Step 6: Final answer
   x = 88,989.32