Finding the Fourth Proportional to 93,105.51, 128,488.31 and 50,666.77

Step by Step Solution

1. Step 1: Write the proportion equation
   93,105.51 : 128,488.31 = 50,666.77 : x
2. Step 2: Convert to fraction form
   93,105.51/128,488.31 = 50,666.77/x
3. Step 3: Cross multiply
   93,105.51x = 128,488.31 × 50,666.77
4. Step 4: Simplify right side
   93,105.51x = 6,510,087,650.46
5. Step 5: Solve for x
   x = 6,510,087,650.46/93,105.51
6. Step 6: Final answer
   x = 69,921.62