Finding the Fourth Proportional to 102,329.94, 141,225.72 and 57,015.30

Step by Step Solution

1. Step 1: Write the proportion equation
   102,329.94 : 141,225.72 = 57,015.30 : x
2. Step 2: Convert to fraction form
   102,329.94/141,225.72 = 57,015.30/x
3. Step 3: Cross multiply
   102,329.94x = 141,225.72 × 57,015.30
4. Step 4: Simplify right side
   102,329.94x = 8,052,027,109.31
5. Step 5: Solve for x
   x = 8,052,027,109.31/102,329.94
6. Step 6: Final answer
   x = 78,686.91