Finding the Fourth Proportional to 42,881.22, 64,420.71 and 41,109.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,881.22 : 64,420.71 = 41,109.78 : x
2. Step 2: Convert to fraction form
   42,881.22/64,420.71 = 41,109.78/x
3. Step 3: Cross multiply
   42,881.22x = 64,420.71 × 41,109.78
4. Step 4: Simplify right side
   42,881.22x = 2,648,321,215.54
5. Step 5: Solve for x
   x = 2,648,321,215.54/42,881.22
6. Step 6: Final answer
   x = 61,759.47