Finding the Fourth Proportional to 50,591.10, 69,821.63 and 42,078.20

Step by Step Solution

1. Step 1: Write the proportion equation
   50,591.10 : 69,821.63 = 42,078.20 : x
2. Step 2: Convert to fraction form
   50,591.10/69,821.63 = 42,078.20/x
3. Step 3: Cross multiply
   50,591.10x = 69,821.63 × 42,078.20
4. Step 4: Simplify right side
   50,591.10x = 2,937,968,502.51
5. Step 5: Solve for x
   x = 2,937,968,502.51/50,591.10
6. Step 6: Final answer
   x = 58,072.84