Finding the Fourth Proportional to 91,917.89, 126,827 and 53,660.07

Step by Step Solution

1. Step 1: Write the proportion equation
   91,917.89 : 126,827 = 53,660.07 : x
2. Step 2: Convert to fraction form
   91,917.89/126,827 = 53,660.07/x
3. Step 3: Cross multiply
   91,917.89x = 126,827 × 53,660.07
4. Step 4: Simplify right side
   91,917.89x = 6,805,545,697.89
5. Step 5: Solve for x
   x = 6,805,545,697.89/91,917.89
6. Step 6: Final answer
   x = 74,039.40