Finding the Fourth Proportional to 105,870.60, 158,676.30 and 46,643.40

Step by Step Solution

1. Step 1: Write the proportion equation
   105,870.60 : 158,676.30 = 46,643.40 : x
2. Step 2: Convert to fraction form
   105,870.60/158,676.30 = 46,643.40/x
3. Step 3: Cross multiply
   105,870.60x = 158,676.30 × 46,643.40
4. Step 4: Simplify right side
   105,870.60x = 7,401,202,131.42
5. Step 5: Solve for x
   x = 7,401,202,131.42/105,870.60
6. Step 6: Final answer
   x = 69,908.00