Finding the Fourth Proportional to 128,610.82, 177,091.81 and 114,061.60

Step by Step Solution

1. Step 1: Write the proportion equation
   128,610.82 : 177,091.81 = 114,061.60 : x
2. Step 2: Convert to fraction form
   128,610.82/177,091.81 = 114,061.60/x
3. Step 3: Cross multiply
   128,610.82x = 177,091.81 × 114,061.60
4. Step 4: Simplify right side
   128,610.82x = 20,199,375,195.50
5. Step 5: Solve for x
   x = 20,199,375,195.50/128,610.82
6. Step 6: Final answer
   x = 157,058.13