Finding the Fourth Proportional to 128,003.32, 191,896.53 and 53,076.70

Step by Step Solution

1. Step 1: Write the proportion equation
   128,003.32 : 191,896.53 = 53,076.70 : x
2. Step 2: Convert to fraction form
   128,003.32/191,896.53 = 53,076.70/x
3. Step 3: Cross multiply
   128,003.32x = 191,896.53 × 53,076.70
4. Step 4: Simplify right side
   128,003.32x = 10,185,234,553.85
5. Step 5: Solve for x
   x = 10,185,234,553.85/128,003.32
6. Step 6: Final answer
   x = 79,570.08