Finding the Fourth Proportional to 128,076.82, 176,755.71 and 70,727.07

Step by Step Solution

1. Step 1: Write the proportion equation
   128,076.82 : 176,755.71 = 70,727.07 : x
2. Step 2: Convert to fraction form
   128,076.82/176,755.71 = 70,727.07/x
3. Step 3: Cross multiply
   128,076.82x = 176,755.71 × 70,727.07
4. Step 4: Simplify right side
   128,076.82x = 12,501,413,474.07
5. Step 5: Solve for x
   x = 12,501,413,474.07/128,076.82
6. Step 6: Final answer
   x = 97,608.71