Finding the Fourth Proportional to 91,554, 126,333.89 and 53,321.91

Step by Step Solution

1. Step 1: Write the proportion equation
   91,554 : 126,333.89 = 53,321.91 : x
2. Step 2: Convert to fraction form
   91,554/126,333.89 = 53,321.91/x
3. Step 3: Cross multiply
   91,554x = 126,333.89 × 53,321.91
4. Step 4: Simplify right side
   91,554x = 6,736,364,045.92
5. Step 5: Solve for x
   x = 6,736,364,045.92/91,554
6. Step 6: Final answer
   x = 73,578.04