Finding the Fourth Proportional to 42,841.85, 64,304.29 and 20,670.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,841.85 : 64,304.29 = 20,670.82 : x
2. Step 2: Convert to fraction form
   42,841.85/64,304.29 = 20,670.82/x
3. Step 3: Cross multiply
   42,841.85x = 64,304.29 × 20,670.82
4. Step 4: Simplify right side
   42,841.85x = 1,329,222,403.82
5. Step 5: Solve for x
   x = 1,329,222,403.82/42,841.85
6. Step 6: Final answer
   x = 31,026.26