Finding the Fourth Proportional to 78,550.09, 108,401.06 and 42,742.07

Step by Step Solution

1. Step 1: Write the proportion equation
   78,550.09 : 108,401.06 = 42,742.07 : x
2. Step 2: Convert to fraction form
   78,550.09/108,401.06 = 42,742.07/x
3. Step 3: Cross multiply
   78,550.09x = 108,401.06 × 42,742.07
4. Step 4: Simplify right side
   78,550.09x = 4,633,285,694.59
5. Step 5: Solve for x
   x = 4,633,285,694.59/78,550.09
6. Step 6: Final answer
   x = 58,985.11