Finding the Fourth Proportional to 57,105.70, 78,803.31 and 31,613.02

Step by Step Solution

1. Step 1: Write the proportion equation
   57,105.70 : 78,803.31 = 31,613.02 : x
2. Step 2: Convert to fraction form
   57,105.70/78,803.31 = 31,613.02/x
3. Step 3: Cross multiply
   57,105.70x = 78,803.31 × 31,613.02
4. Step 4: Simplify right side
   57,105.70x = 2,491,210,615.10
5. Step 5: Solve for x
   x = 2,491,210,615.10/57,105.70
6. Step 6: Final answer
   x = 43,624.55