Finding the Fourth Proportional to 105,479.86, 158,199.63 and 31,607.86

Step by Step Solution

1. Step 1: Write the proportion equation
   105,479.86 : 158,199.63 = 31,607.86 : x
2. Step 2: Convert to fraction form
   105,479.86/158,199.63 = 31,607.86/x
3. Step 3: Cross multiply
   105,479.86x = 158,199.63 × 31,607.86
4. Step 4: Simplify right side
   105,479.86x = 5,000,351,757.09
5. Step 5: Solve for x
   x = 5,000,351,757.09/105,479.86
6. Step 6: Final answer
   x = 47,405.75