Finding the Fourth Proportional to 116,648.58, 160,980.28 and 65,678.84

Step by Step Solution

1. Step 1: Write the proportion equation
   116,648.58 : 160,980.28 = 65,678.84 : x
2. Step 2: Convert to fraction form
   116,648.58/160,980.28 = 65,678.84/x
3. Step 3: Cross multiply
   116,648.58x = 160,980.28 × 65,678.84
4. Step 4: Simplify right side
   116,648.58x = 10,572,998,053.28
5. Step 5: Solve for x
   x = 10,572,998,053.28/116,648.58
6. Step 6: Final answer
   x = 90,639.75