Finding the Fourth Proportional to 78,426.82, 108,226.83 and 42,615.64

Step by Step Solution

1. Step 1: Write the proportion equation
   78,426.82 : 108,226.83 = 42,615.64 : x
2. Step 2: Convert to fraction form
   78,426.82/108,226.83 = 42,615.64/x
3. Step 3: Cross multiply
   78,426.82x = 108,226.83 × 42,615.64
4. Step 4: Simplify right side
   78,426.82x = 4,612,155,625.62
5. Step 5: Solve for x
   x = 4,612,155,625.62/78,426.82
6. Step 6: Final answer
   x = 58,808.40