Finding the Fourth Proportional to 93,409.56, 128,904.50 and 53,123.27

Step by Step Solution

1. Step 1: Write the proportion equation
   93,409.56 : 128,904.50 = 53,123.27 : x
2. Step 2: Convert to fraction form
   93,409.56/128,904.50 = 53,123.27/x
3. Step 3: Cross multiply
   93,409.56x = 128,904.50 × 53,123.27
4. Step 4: Simplify right side
   93,409.56x = 6,847,827,647.58
5. Step 5: Solve for x
   x = 6,847,827,647.58/93,409.56
6. Step 6: Final answer
   x = 73,309.71