Finding the Fourth Proportional to 106,591.40, 159,872.51 and 31,723.10

Step by Step Solution

1. Step 1: Write the proportion equation
   106,591.40 : 159,872.51 = 31,723.10 : x
2. Step 2: Convert to fraction form
   106,591.40/159,872.51 = 31,723.10/x
3. Step 3: Cross multiply
   106,591.40x = 159,872.51 × 31,723.10
4. Step 4: Simplify right side
   106,591.40x = 5,071,650,901.93
5. Step 5: Solve for x
   x = 5,071,650,901.93/106,591.40
6. Step 6: Final answer
   x = 47,580.30