Finding the Fourth Proportional to 113,240.96, 156,002.40 and 79,185.76

Step by Step Solution

1. Step 1: Write the proportion equation
   113,240.96 : 156,002.40 = 79,185.76 : x
2. Step 2: Convert to fraction form
   113,240.96/156,002.40 = 79,185.76/x
3. Step 3: Cross multiply
   113,240.96x = 156,002.40 × 79,185.76
4. Step 4: Simplify right side
   113,240.96x = 12,353,168,605.82
5. Step 5: Solve for x
   x = 12,353,168,605.82/113,240.96
6. Step 6: Final answer
   x = 109,087.46