Finding the Fourth Proportional to 78,055.20, 107,716.05 and 42,245.19

Step by Step Solution

1. Step 1: Write the proportion equation
   78,055.20 : 107,716.05 = 42,245.19 : x
2. Step 2: Convert to fraction form
   78,055.20/107,716.05 = 42,245.19/x
3. Step 3: Cross multiply
   78,055.20x = 107,716.05 × 42,245.19
4. Step 4: Simplify right side
   78,055.20x = 4,550,484,998.30
5. Step 5: Solve for x
   x = 4,550,484,998.30/78,055.20
6. Step 6: Final answer
   x = 58,298.29