Finding the Fourth Proportional to 57,110.72, 78,810.20 and 31,618.04

Step by Step Solution

1. Step 1: Write the proportion equation
   57,110.72 : 78,810.20 = 31,618.04 : x
2. Step 2: Convert to fraction form
   57,110.72/78,810.20 = 31,618.04/x
3. Step 3: Cross multiply
   57,110.72x = 78,810.20 × 31,618.04
4. Step 4: Simplify right side
   57,110.72x = 2,491,824,056.01
5. Step 5: Solve for x
   x = 2,491,824,056.01/57,110.72
6. Step 6: Final answer
   x = 43,631.46