Finding the Fourth Proportional to 53,219.43, 73,442.79 and 30,559.91

Step by Step Solution

1. Step 1: Write the proportion equation
   53,219.43 : 73,442.79 = 30,559.91 : x
2. Step 2: Convert to fraction form
   53,219.43/73,442.79 = 30,559.91/x
3. Step 3: Cross multiply
   53,219.43x = 73,442.79 × 30,559.91
4. Step 4: Simplify right side
   53,219.43x = 2,244,404,685.33
5. Step 5: Solve for x
   x = 2,244,404,685.33/53,219.43
6. Step 6: Final answer
   x = 42,172.66