Finding the Fourth Proportional to 85,560.84, 128,234.34 and 41,175.72

Step by Step Solution

1. Step 1: Write the proportion equation
   85,560.84 : 128,234.34 = 41,175.72 : x
2. Step 2: Convert to fraction form
   85,560.84/128,234.34 = 41,175.72/x
3. Step 3: Cross multiply
   85,560.84x = 128,234.34 × 41,175.72
4. Step 4: Simplify right side
   85,560.84x = 5,280,141,278.22
5. Step 5: Solve for x
   x = 5,280,141,278.22/85,560.84
6. Step 6: Final answer
   x = 61,712.13