Finding the Fourth Proportional to 113,521.76, 156,496.38 and 79,424.60

Step by Step Solution

1. Step 1: Write the proportion equation
   113,521.76 : 156,496.38 = 79,424.60 : x
2. Step 2: Convert to fraction form
   113,521.76/156,496.38 = 79,424.60/x
3. Step 3: Cross multiply
   113,521.76x = 156,496.38 × 79,424.60
4. Step 4: Simplify right side
   113,521.76x = 12,429,662,382.95
5. Step 5: Solve for x
   x = 12,429,662,382.95/113,521.76
6. Step 6: Final answer
   x = 109,491.45