Finding the Fourth Proportional to 123,742.56, 170,763.84 and 67,152.72

Step by Step Solution

1. Step 1: Write the proportion equation
   123,742.56 : 170,763.84 = 67,152.72 : x
2. Step 2: Convert to fraction form
   123,742.56/170,763.84 = 67,152.72/x
3. Step 3: Cross multiply
   123,742.56x = 170,763.84 × 67,152.72
4. Step 4: Simplify right side
   123,742.56x = 11,467,256,333.64
5. Step 5: Solve for x
   x = 11,467,256,333.64/123,742.56
6. Step 6: Final answer
   x = 92,670.27