Finding the Fourth Proportional to 56,769.29, 78,340.61 and 31,618.25

Step by Step Solution

1. Step 1: Write the proportion equation
   56,769.29 : 78,340.61 = 31,618.25 : x
2. Step 2: Convert to fraction form
   56,769.29/78,340.61 = 31,618.25/x
3. Step 3: Cross multiply
   56,769.29x = 78,340.61 × 31,618.25
4. Step 4: Simplify right side
   56,769.29x = 2,476,992,834.04
5. Step 5: Solve for x
   x = 2,476,992,834.04/56,769.29
6. Step 6: Final answer
   x = 43,632.62