Finding the Fourth Proportional to 105,478.86, 158,198.13 and 31,606.86

Step by Step Solution

1. Step 1: Write the proportion equation
   105,478.86 : 158,198.13 = 31,606.86 : x
2. Step 2: Convert to fraction form
   105,478.86/158,198.13 = 31,606.86/x
3. Step 3: Cross multiply
   105,478.86x = 158,198.13 × 31,606.86
4. Step 4: Simplify right side
   105,478.86x = 5,000,146,147.17
5. Step 5: Solve for x
   x = 5,000,146,147.17/105,478.86
6. Step 6: Final answer
   x = 47,404.25