Finding the Fourth Proportional to 93,456.53, 128,965.50 and 53,166.50

Step by Step Solution

1. Step 1: Write the proportion equation
   93,456.53 : 128,965.50 = 53,166.50 : x
2. Step 2: Convert to fraction form
   93,456.53/128,965.50 = 53,166.50/x
3. Step 3: Cross multiply
   93,456.53x = 128,965.50 × 53,166.50
4. Step 4: Simplify right side
   93,456.53x = 6,856,643,610.92
5. Step 5: Solve for x
   x = 6,856,643,610.92/93,456.53
6. Step 6: Final answer
   x = 73,367.20