Finding the Fourth Proportional to 42,939.62, 64,307.61 and 34,026.29

Step by Step Solution

1. Step 1: Write the proportion equation
   42,939.62 : 64,307.61 = 34,026.29 : x
2. Step 2: Convert to fraction form
   42,939.62/64,307.61 = 34,026.29/x
3. Step 3: Cross multiply
   42,939.62x = 64,307.61 × 34,026.29
4. Step 4: Simplify right side
   42,939.62x = 2,188,148,895.40
5. Step 5: Solve for x
   x = 2,188,148,895.40/42,939.62
6. Step 6: Final answer
   x = 50,958.75