Finding the Fourth Proportional to 93,061.38, 128,425.31 and 50,620.21

Step by Step Solution

1. Step 1: Write the proportion equation
   93,061.38 : 128,425.31 = 50,620.21 : x
2. Step 2: Convert to fraction form
   93,061.38/128,425.31 = 50,620.21/x
3. Step 3: Cross multiply
   93,061.38x = 128,425.31 × 50,620.21
4. Step 4: Simplify right side
   93,061.38x = 6,500,916,161.52
5. Step 5: Solve for x
   x = 6,500,916,161.52/93,061.38
6. Step 6: Final answer
   x = 69,856.22