Finding the Fourth Proportional to 116,100.78, 160,220.88 and 65,124.83

Step by Step Solution

1. Step 1: Write the proportion equation
   116,100.78 : 160,220.88 = 65,124.83 : x
2. Step 2: Convert to fraction form
   116,100.78/160,220.88 = 65,124.83/x
3. Step 3: Cross multiply
   116,100.78x = 160,220.88 × 65,124.83
4. Step 4: Simplify right side
   116,100.78x = 10,434,356,771.35
5. Step 5: Solve for x
   x = 10,434,356,771.35/116,100.78
6. Step 6: Final answer
   x = 89,873.27