Finding the Fourth Proportional to 105,476.58, 158,128.20 and 49,288.92

Step by Step Solution

1. Step 1: Write the proportion equation
   105,476.58 : 158,128.20 = 49,288.92 : x
2. Step 2: Convert to fraction form
   105,476.58/158,128.20 = 49,288.92/x
3. Step 3: Cross multiply
   105,476.58x = 158,128.20 × 49,288.92
4. Step 4: Simplify right side
   105,476.58x = 7,793,968,199.54
5. Step 5: Solve for x
   x = 7,793,968,199.54/105,476.58
6. Step 6: Final answer
   x = 73,892.88