Finding the Fourth Proportional to 123,706.56, 170,714.28 and 67,116.72

Step by Step Solution

1. Step 1: Write the proportion equation
   123,706.56 : 170,714.28 = 67,116.72 : x
2. Step 2: Convert to fraction form
   123,706.56/170,714.28 = 67,116.72/x
3. Step 3: Cross multiply
   123,706.56x = 170,714.28 × 67,116.72
4. Step 4: Simplify right side
   123,706.56x = 11,457,782,530.76
5. Step 5: Solve for x
   x = 11,457,782,530.76/123,706.56
6. Step 6: Final answer
   x = 92,620.65