Finding the Fourth Proportional to 105,741.80, 145,847.18 and 89,801

Step by Step Solution

1. Step 1: Write the proportion equation
   105,741.80 : 145,847.18 = 89,801 : x
2. Step 2: Convert to fraction form
   105,741.80/145,847.18 = 89,801/x
3. Step 3: Cross multiply
   105,741.80x = 145,847.18 × 89,801
4. Step 4: Simplify right side
   105,741.80x = 13,097,222,611.18
5. Step 5: Solve for x
   x = 13,097,222,611.18/105,741.80
6. Step 6: Final answer
   x = 123,860.41