Finding the Fourth Proportional to 102,109.10, 153,163.71 and 31,993.88

Step by Step Solution

1. Step 1: Write the proportion equation
   102,109.10 : 153,163.71 = 31,993.88 : x
2. Step 2: Convert to fraction form
   102,109.10/153,163.71 = 31,993.88/x
3. Step 3: Cross multiply
   102,109.10x = 153,163.71 × 31,993.88
4. Step 4: Simplify right side
   102,109.10x = 4,900,300,592.28
5. Step 5: Solve for x
   x = 4,900,300,592.28/102,109.10
6. Step 6: Final answer
   x = 47,990.83