Finding the Fourth Proportional to 91,700.16, 126,568.71 and 55,909.89

Step by Step Solution

1. Step 1: Write the proportion equation
   91,700.16 : 126,568.71 = 55,909.89 : x
2. Step 2: Convert to fraction form
   91,700.16/126,568.71 = 55,909.89/x
3. Step 3: Cross multiply
   91,700.16x = 126,568.71 × 55,909.89
4. Step 4: Simplify right side
   91,700.16x = 7,076,442,653.54
5. Step 5: Solve for x
   x = 7,076,442,653.54/91,700.16
6. Step 6: Final answer
   x = 77,169.36