Finding the Fourth Proportional to 78,608.98, 108,479.74 and 42,798.92

Step by Step Solution

1. Step 1: Write the proportion equation
   78,608.98 : 108,479.74 = 42,798.92 : x
2. Step 2: Convert to fraction form
   78,608.98/108,479.74 = 42,798.92/x
3. Step 3: Cross multiply
   78,608.98x = 108,479.74 × 42,798.92
4. Step 4: Simplify right side
   78,608.98x = 4,642,815,713.88
5. Step 5: Solve for x
   x = 4,642,815,713.88/78,608.98
6. Step 6: Final answer
   x = 59,062.15