Finding the Fourth Proportional to 105,353.72, 158,113.61 and 46,230.20

Step by Step Solution

1. Step 1: Write the proportion equation
   105,353.72 : 158,113.61 = 46,230.20 : x
2. Step 2: Convert to fraction form
   105,353.72/158,113.61 = 46,230.20/x
3. Step 3: Cross multiply
   105,353.72x = 158,113.61 × 46,230.20
4. Step 4: Simplify right side
   105,353.72x = 7,309,623,813.02
5. Step 5: Solve for x
   x = 7,309,623,813.02/105,353.72
6. Step 6: Final answer
   x = 69,381.73