Finding the Fourth Proportional to 102,178.72, 141,005.28 and 57,466.72

Step by Step Solution

1. Step 1: Write the proportion equation
   102,178.72 : 141,005.28 = 57,466.72 : x
2. Step 2: Convert to fraction form
   102,178.72/141,005.28 = 57,466.72/x
3. Step 3: Cross multiply
   102,178.72x = 141,005.28 × 57,466.72
4. Step 4: Simplify right side
   102,178.72x = 8,103,110,944.28
5. Step 5: Solve for x
   x = 8,103,110,944.28/102,178.72
6. Step 6: Final answer
   x = 79,303.31