Finding the Fourth Proportional to 51,790.30, 71,467.86 and 30,561.82

Step by Step Solution

1. Step 1: Write the proportion equation
   51,790.30 : 71,467.86 = 30,561.82 : x
2. Step 2: Convert to fraction form
   51,790.30/71,467.86 = 30,561.82/x
3. Step 3: Cross multiply
   51,790.30x = 71,467.86 × 30,561.82
4. Step 4: Simplify right side
   51,790.30x = 2,184,187,873.11
5. Step 5: Solve for x
   x = 2,184,187,873.11/51,790.30
6. Step 6: Final answer
   x = 42,173.69