Finding the Fourth Proportional to 79,168.34, 109,252.45 and 42,870.18

Step by Step Solution

1. Step 1: Write the proportion equation
   79,168.34 : 109,252.45 = 42,870.18 : x
2. Step 2: Convert to fraction form
   79,168.34/109,252.45 = 42,870.18/x
3. Step 3: Cross multiply
   79,168.34x = 109,252.45 × 42,870.18
4. Step 4: Simplify right side
   79,168.34x = 4,683,672,196.94
5. Step 5: Solve for x
   x = 4,683,672,196.94/79,168.34
6. Step 6: Final answer
   x = 59,160.92