Finding the Fourth Proportional to 93,109.86, 128,487.78 and 50,668.56

Step by Step Solution

1. Step 1: Write the proportion equation
   93,109.86 : 128,487.78 = 50,668.56 : x
2. Step 2: Convert to fraction form
   93,109.86/128,487.78 = 50,668.56/x
3. Step 3: Cross multiply
   93,109.86x = 128,487.78 × 50,668.56
4. Step 4: Simplify right side
   93,109.86x = 6,510,290,790.20
5. Step 5: Solve for x
   x = 6,510,290,790.20/93,109.86
6. Step 6: Final answer
   x = 69,920.53