Finding the Fourth Proportional to 116,434.40, 160,552.56 and 78,643.04

Step by Step Solution

1. Step 1: Write the proportion equation
   116,434.40 : 160,552.56 = 78,643.04 : x
2. Step 2: Convert to fraction form
   116,434.40/160,552.56 = 78,643.04/x
3. Step 3: Cross multiply
   116,434.40x = 160,552.56 × 78,643.04
4. Step 4: Simplify right side
   116,434.40x = 12,626,341,398.18
5. Step 5: Solve for x
   x = 12,626,341,398.18/116,434.40
6. Step 6: Final answer
   x = 108,441.68