Finding the Fourth Proportional to 113,718.42, 156,738.69 and 79,737.30

Step by Step Solution

1. Step 1: Write the proportion equation
   113,718.42 : 156,738.69 = 79,737.30 : x
2. Step 2: Convert to fraction form
   113,718.42/156,738.69 = 79,737.30/x
3. Step 3: Cross multiply
   113,718.42x = 156,738.69 × 79,737.30
4. Step 4: Simplify right side
   113,718.42x = 12,497,919,946.14
5. Step 5: Solve for x
   x = 12,497,919,946.14/113,718.42
6. Step 6: Final answer
   x = 109,902.34