Finding the Fourth Proportional to 113,256.28, 156,374.85 and 79,340.02

Step by Step Solution

1. Step 1: Write the proportion equation
   113,256.28 : 156,374.85 = 79,340.02 : x
2. Step 2: Convert to fraction form
   113,256.28/156,374.85 = 79,340.02/x
3. Step 3: Cross multiply
   113,256.28x = 156,374.85 × 79,340.02
4. Step 4: Simplify right side
   113,256.28x = 12,406,783,726.50
5. Step 5: Solve for x
   x = 12,406,783,726.50/113,256.28
6. Step 6: Final answer
   x = 109,546.10