Finding the Fourth Proportional to 105,796.18, 158,709.12 and 30,921.81

Step by Step Solution

1. Step 1: Write the proportion equation
   105,796.18 : 158,709.12 = 30,921.81 : x
2. Step 2: Convert to fraction form
   105,796.18/158,709.12 = 30,921.81/x
3. Step 3: Cross multiply
   105,796.18x = 158,709.12 × 30,921.81
4. Step 4: Simplify right side
   105,796.18x = 4,907,573,253.91
5. Step 5: Solve for x
   x = 4,907,573,253.91/105,796.18
6. Step 6: Final answer
   x = 46,387.06