Finding the Fourth Proportional to 79,005.42, 108,962.49 and 56,337.15

Step by Step Solution

1. Step 1: Write the proportion equation
   79,005.42 : 108,962.49 = 56,337.15 : x
2. Step 2: Convert to fraction form
   79,005.42/108,962.49 = 56,337.15/x
3. Step 3: Cross multiply
   79,005.42x = 108,962.49 × 56,337.15
4. Step 4: Simplify right side
   79,005.42x = 6,138,636,143.50
5. Step 5: Solve for x
   x = 6,138,636,143.50/79,005.42
6. Step 6: Final answer
   x = 77,698.92