Finding the Fourth Proportional to 113,196.24, 156,211.56 and 70,779.60

Step by Step Solution

1. Step 1: Write the proportion equation
   113,196.24 : 156,211.56 = 70,779.60 : x
2. Step 2: Convert to fraction form
   113,196.24/156,211.56 = 70,779.60/x
3. Step 3: Cross multiply
   113,196.24x = 156,211.56 × 70,779.60
4. Step 4: Simplify right side
   113,196.24x = 11,056,591,732.18
5. Step 5: Solve for x
   x = 11,056,591,732.18/113,196.24
6. Step 6: Final answer
   x = 97,676.32