Finding the Fourth Proportional to 102,064.56, 140,848.56 and 57,352.56

Step by Step Solution

1. Step 1: Write the proportion equation
   102,064.56 : 140,848.56 = 57,352.56 : x
2. Step 2: Convert to fraction form
   102,064.56/140,848.56 = 57,352.56/x
3. Step 3: Cross multiply
   102,064.56x = 140,848.56 × 57,352.56
4. Step 4: Simplify right side
   102,064.56x = 8,078,025,488.31
5. Step 5: Solve for x
   x = 8,078,025,488.31/102,064.56
6. Step 6: Final answer
   x = 79,146.23