Finding the Fourth Proportional to 57,018.47, 78,683.01 and 31,176.54

Step by Step Solution

1. Step 1: Write the proportion equation
   57,018.47 : 78,683.01 = 31,176.54 : x
2. Step 2: Convert to fraction form
   57,018.47/78,683.01 = 31,176.54/x
3. Step 3: Cross multiply
   57,018.47x = 78,683.01 × 31,176.54
4. Step 4: Simplify right side
   57,018.47x = 2,453,064,008.59
5. Step 5: Solve for x
   x = 2,453,064,008.59/57,018.47
6. Step 6: Final answer
   x = 43,022.27