Finding the Fourth Proportional to 128,267.56, 192,404.72 and 60,783.76

Step by Step Solution

1. Step 1: Write the proportion equation
   128,267.56 : 192,404.72 = 60,783.76 : x
2. Step 2: Convert to fraction form
   128,267.56/192,404.72 = 60,783.76/x
3. Step 3: Cross multiply
   128,267.56x = 192,404.72 × 60,783.76
4. Step 4: Simplify right side
   128,267.56x = 11,695,082,323.35
5. Step 5: Solve for x
   x = 11,695,082,323.35/128,267.56
6. Step 6: Final answer
   x = 91,177.24