Finding the Fourth Proportional to 56,969.28, 78,618.84 and 31,818.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,969.28 : 78,618.84 = 31,818.72 : x
2. Step 2: Convert to fraction form
   56,969.28/78,618.84 = 31,818.72/x
3. Step 3: Cross multiply
   56,969.28x = 78,618.84 × 31,818.72
4. Step 4: Simplify right side
   56,969.28x = 2,501,550,856.68
5. Step 5: Solve for x
   x = 2,501,550,856.68/56,969.28
6. Step 6: Final answer
   x = 43,910.52