Finding the Fourth Proportional to 78,446, 108,254.82 and 42,636.22

Step by Step Solution

1. Step 1: Write the proportion equation
   78,446 : 108,254.82 = 42,636.22 : x
2. Step 2: Convert to fraction form
   78,446/108,254.82 = 42,636.22/x
3. Step 3: Cross multiply
   78,446x = 108,254.82 × 42,636.22
4. Step 4: Simplify right side
   78,446x = 4,615,576,321.58
5. Step 5: Solve for x
   x = 4,615,576,321.58/78,446
6. Step 6: Final answer
   x = 58,837.62