Finding the Fourth Proportional to 79,159.84, 109,240.72 and 42,861.68

Step by Step Solution

1. Step 1: Write the proportion equation
   79,159.84 : 109,240.72 = 42,861.68 : x
2. Step 2: Convert to fraction form
   79,159.84/109,240.72 = 42,861.68/x
3. Step 3: Cross multiply
   79,159.84x = 109,240.72 × 42,861.68
4. Step 4: Simplify right side
   79,159.84x = 4,682,240,783.61
5. Step 5: Solve for x
   x = 4,682,240,783.61/79,159.84
6. Step 6: Final answer
   x = 59,149.19