Finding the Fourth Proportional to 42,809.88, 64,241.55 and 30,803.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,809.88 : 64,241.55 = 30,803.25 : x
2. Step 2: Convert to fraction form
   42,809.88/64,241.55 = 30,803.25/x
3. Step 3: Cross multiply
   42,809.88x = 64,241.55 × 30,803.25
4. Step 4: Simplify right side
   42,809.88x = 1,978,848,525.04
5. Step 5: Solve for x
   x = 1,978,848,525.04/42,809.88
6. Step 6: Final answer
   x = 46,224.11