Finding the Fourth Proportional to 57,147.02, 78,858.51 and 31,993.10

Step by Step Solution

1. Step 1: Write the proportion equation
   57,147.02 : 78,858.51 = 31,993.10 : x
2. Step 2: Convert to fraction form
   57,147.02/78,858.51 = 31,993.10/x
3. Step 3: Cross multiply
   57,147.02x = 78,858.51 × 31,993.10
4. Step 4: Simplify right side
   57,147.02x = 2,522,928,196.28
5. Step 5: Solve for x
   x = 2,522,928,196.28/57,147.02
6. Step 6: Final answer
   x = 44,148.03