Finding the Fourth Proportional to 103,621.16, 155,431.72 and 28,741.30

Step by Step Solution

1. Step 1: Write the proportion equation
   103,621.16 : 155,431.72 = 28,741.30 : x
2. Step 2: Convert to fraction form
   103,621.16/155,431.72 = 28,741.30/x
3. Step 3: Cross multiply
   103,621.16x = 155,431.72 × 28,741.30
4. Step 4: Simplify right side
   103,621.16x = 4,467,309,694.04
5. Step 5: Solve for x
   x = 4,467,309,694.04/103,621.16
6. Step 6: Final answer
   x = 43,111.94