Finding the Fourth Proportional to 106,328.88, 159,524.50 and 31,451

Step by Step Solution

1. Step 1: Write the proportion equation
   106,328.88 : 159,524.50 = 31,451 : x
2. Step 2: Convert to fraction form
   106,328.88/159,524.50 = 31,451/x
3. Step 3: Cross multiply
   106,328.88x = 159,524.50 × 31,451
4. Step 4: Simplify right side
   106,328.88x = 5,017,205,049.50
5. Step 5: Solve for x
   x = 5,017,205,049.50/106,328.88
6. Step 6: Final answer
   x = 47,185.72