Finding the Fourth Proportional to 93,141.72, 128,538.72 and 52,857.36

Step by Step Solution

1. Step 1: Write the proportion equation
   93,141.72 : 128,538.72 = 52,857.36 : x
2. Step 2: Convert to fraction form
   93,141.72/128,538.72 = 52,857.36/x
3. Step 3: Cross multiply
   93,141.72x = 128,538.72 × 52,857.36
4. Step 4: Simplify right side
   93,141.72x = 6,794,217,396.98
5. Step 5: Solve for x
   x = 6,794,217,396.98/93,141.72
6. Step 6: Final answer
   x = 72,944.94