Finding the Fourth Proportional to 42,880.22, 64,419.21 and 41,108.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,880.22 : 64,419.21 = 41,108.78 : x
2. Step 2: Convert to fraction form
   42,880.22/64,419.21 = 41,108.78/x
3. Step 3: Cross multiply
   42,880.22x = 64,419.21 × 41,108.78
4. Step 4: Simplify right side
   42,880.22x = 2,648,195,131.66
5. Step 5: Solve for x
   x = 2,648,195,131.66/42,880.22
6. Step 6: Final answer
   x = 61,757.97