Finding the Fourth Proportional to 105,531.60, 158,406.52 and 70,714.56

Step by Step Solution

1. Step 1: Write the proportion equation
   105,531.60 : 158,406.52 = 70,714.56 : x
2. Step 2: Convert to fraction form
   105,531.60/158,406.52 = 70,714.56/x
3. Step 3: Cross multiply
   105,531.60x = 158,406.52 × 70,714.56
4. Step 4: Simplify right side
   105,531.60x = 11,201,647,362.93
5. Step 5: Solve for x
   x = 11,201,647,362.93/105,531.60
6. Step 6: Final answer
   x = 106,144.96