Finding the Fourth Proportional to 128,496.09, 177,300.01 and 83,167.79

Step by Step Solution

1. Step 1: Write the proportion equation
   128,496.09 : 177,300.01 = 83,167.79 : x
2. Step 2: Convert to fraction form
   128,496.09/177,300.01 = 83,167.79/x
3. Step 3: Cross multiply
   128,496.09x = 177,300.01 × 83,167.79
4. Step 4: Simplify right side
   128,496.09x = 14,745,648,748.32
5. Step 5: Solve for x
   x = 14,745,648,748.32/128,496.09
6. Step 6: Final answer
   x = 114,755.62