Finding the Fourth Proportional to 116,421.80, 160,660.16 and 64,736.82

Step by Step Solution

1. Step 1: Write the proportion equation
   116,421.80 : 160,660.16 = 64,736.82 : x
2. Step 2: Convert to fraction form
   116,421.80/160,660.16 = 64,736.82/x
3. Step 3: Cross multiply
   116,421.80x = 160,660.16 × 64,736.82
4. Step 4: Simplify right side
   116,421.80x = 10,400,627,535.41
5. Step 5: Solve for x
   x = 10,400,627,535.41/116,421.80
6. Step 6: Final answer
   x = 89,335.74