Finding the Fourth Proportional to 93,410.47, 128,869.41 and 57,538.27

Step by Step Solution

1. Step 1: Write the proportion equation
   93,410.47 : 128,869.41 = 57,538.27 : x
2. Step 2: Convert to fraction form
   93,410.47/128,869.41 = 57,538.27/x
3. Step 3: Cross multiply
   93,410.47x = 128,869.41 × 57,538.27
4. Step 4: Simplify right side
   93,410.47x = 7,414,922,907.32
5. Step 5: Solve for x
   x = 7,414,922,907.32/93,410.47
6. Step 6: Final answer
   x = 79,380.00