Finding the Fourth Proportional to 78,608.03, 108,479.10 and 42,798.05

Step by Step Solution

1. Step 1: Write the proportion equation
   78,608.03 : 108,479.10 = 42,798.05 : x
2. Step 2: Convert to fraction form
   78,608.03/108,479.10 = 42,798.05/x
3. Step 3: Cross multiply
   78,608.03x = 108,479.10 × 42,798.05
4. Step 4: Simplify right side
   78,608.03x = 4,642,693,403.36
5. Step 5: Solve for x
   x = 4,642,693,403.36/78,608.03
6. Step 6: Final answer
   x = 59,061.31