Finding the Fourth Proportional to 78,301.08, 108,055.78 and 42,491.08

Step by Step Solution

1. Step 1: Write the proportion equation
   78,301.08 : 108,055.78 = 42,491.08 : x
2. Step 2: Convert to fraction form
   78,301.08/108,055.78 = 42,491.08/x
3. Step 3: Cross multiply
   78,301.08x = 108,055.78 × 42,491.08
4. Step 4: Simplify right side
   78,301.08x = 4,591,406,821.28
5. Step 5: Solve for x
   x = 4,591,406,821.28/78,301.08
6. Step 6: Final answer
   x = 58,637.85