Finding the Fourth Proportional to 78,608.10, 108,480.16 and 42,798.11

Step by Step Solution

1. Step 1: Write the proportion equation
   78,608.10 : 108,480.16 = 42,798.11 : x
2. Step 2: Convert to fraction form
   78,608.10/108,480.16 = 42,798.11/x
3. Step 3: Cross multiply
   78,608.10x = 108,480.16 × 42,798.11
4. Step 4: Simplify right side
   78,608.10x = 4,642,745,331.59
5. Step 5: Solve for x
   x = 4,642,745,331.59/78,608.10
6. Step 6: Final answer
   x = 59,061.92