Finding the Fourth Proportional to 102,108.53, 153,162.87 and 31,993.31

Step by Step Solution

1. Step 1: Write the proportion equation
   102,108.53 : 153,162.87 = 31,993.31 : x
2. Step 2: Convert to fraction form
   102,108.53/153,162.87 = 31,993.31/x
3. Step 3: Cross multiply
   102,108.53x = 153,162.87 × 31,993.31
4. Step 4: Simplify right side
   102,108.53x = 4,900,187,443.33
5. Step 5: Solve for x
   x = 4,900,187,443.33/102,108.53
6. Step 6: Final answer
   x = 47,989.99