Finding the Fourth Proportional to 78,466.17, 108,282.06 and 42,657.09

Step by Step Solution

1. Step 1: Write the proportion equation
   78,466.17 : 108,282.06 = 42,657.09 : x
2. Step 2: Convert to fraction form
   78,466.17/108,282.06 = 42,657.09/x
3. Step 3: Cross multiply
   78,466.17x = 108,282.06 × 42,657.09
4. Step 4: Simplify right side
   78,466.17x = 4,618,997,578.81
5. Step 5: Solve for x
   x = 4,618,997,578.81/78,466.17
6. Step 6: Final answer
   x = 58,866.10