Finding the Fourth Proportional to 42,891.39, 64,265.96 and 30,349.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,891.39 : 64,265.96 = 30,349.25 : x
2. Step 2: Convert to fraction form
   42,891.39/64,265.96 = 30,349.25/x
3. Step 3: Cross multiply
   42,891.39x = 64,265.96 × 30,349.25
4. Step 4: Simplify right side
   42,891.39x = 1,950,423,213.45
5. Step 5: Solve for x
   x = 1,950,423,213.45/42,891.39
6. Step 6: Final answer
   x = 45,473.54