Finding the Fourth Proportional to 116,776.88, 161,118.76 and 65,771.78

Step by Step Solution

1. Step 1: Write the proportion equation
   116,776.88 : 161,118.76 = 65,771.78 : x
2. Step 2: Convert to fraction form
   116,776.88/161,118.76 = 65,771.78/x
3. Step 3: Cross multiply
   116,776.88x = 161,118.76 × 65,771.78
4. Step 4: Simplify right side
   116,776.88x = 10,597,067,636.59
5. Step 5: Solve for x
   x = 10,597,067,636.59/116,776.88
6. Step 6: Final answer
   x = 90,746.28