Finding the Fourth Proportional to 78,464.34, 108,282.69 and 42,656.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,464.34 : 108,282.69 = 42,656.31 : x
2. Step 2: Convert to fraction form
   78,464.34/108,282.69 = 42,656.31/x
3. Step 3: Cross multiply
   78,464.34x = 108,282.69 × 42,656.31
4. Step 4: Simplify right side
   78,464.34x = 4,618,939,992.27
5. Step 5: Solve for x
   x = 4,618,939,992.27/78,464.34
6. Step 6: Final answer
   x = 58,866.74