Finding the Fourth Proportional to 128,499.45, 177,384.83 and 96,676.17

Step by Step Solution

1. Step 1: Write the proportion equation
   128,499.45 : 177,384.83 = 96,676.17 : x
2. Step 2: Convert to fraction form
   128,499.45/177,384.83 = 96,676.17/x
3. Step 3: Cross multiply
   128,499.45x = 177,384.83 × 96,676.17
4. Step 4: Simplify right side
   128,499.45x = 17,148,885,980.50
5. Step 5: Solve for x
   x = 17,148,885,980.50/128,499.45
6. Step 6: Final answer
   x = 133,454.94