Finding the Fourth Proportional to 73,772.41, 110,769.31 and 42,218.10

Step by Step Solution

1. Step 1: Write the proportion equation
   73,772.41 : 110,769.31 = 42,218.10 : x
2. Step 2: Convert to fraction form
   73,772.41/110,769.31 = 42,218.10/x
3. Step 3: Cross multiply
   73,772.41x = 110,769.31 × 42,218.10
4. Step 4: Simplify right side
   73,772.41x = 4,676,469,806.51
5. Step 5: Solve for x
   x = 4,676,469,806.51/73,772.41
6. Step 6: Final answer
   x = 63,390.50