Finding the Fourth Proportional to 45,434.09, 67,805.65 and 42,426.07

Step by Step Solution

1. Step 1: Write the proportion equation
   45,434.09 : 67,805.65 = 42,426.07 : x
2. Step 2: Convert to fraction form
   45,434.09/67,805.65 = 42,426.07/x
3. Step 3: Cross multiply
   45,434.09x = 67,805.65 × 42,426.07
4. Step 4: Simplify right side
   45,434.09x = 2,876,727,253.30
5. Step 5: Solve for x
   x = 2,876,727,253.30/45,434.09
6. Step 6: Final answer
   x = 63,316.49