Finding the Fourth Proportional to 105,493.28, 158,222.64 and 31,604

Step by Step Solution

1. Step 1: Write the proportion equation
   105,493.28 : 158,222.64 = 31,604 : x
2. Step 2: Convert to fraction form
   105,493.28/158,222.64 = 31,604/x
3. Step 3: Cross multiply
   105,493.28x = 158,222.64 × 31,604
4. Step 4: Simplify right side
   105,493.28x = 5,000,468,314.56
5. Step 5: Solve for x
   x = 5,000,468,314.56/105,493.28
6. Step 6: Final answer
   x = 47,400.82