Finding the Fourth Proportional to 60,644.10, 85,076.70 and 60,644.10

Step by Step Solution

1. Step 1: Write the proportion equation
   60,644.10 : 85,076.70 = 60,644.10 : x
2. Step 2: Convert to fraction form
   60,644.10/85,076.70 = 60,644.10/x
3. Step 3: Cross multiply
   60,644.10x = 85,076.70 × 60,644.10
4. Step 4: Simplify right side
   60,644.10x = 5,159,399,902.47
5. Step 5: Solve for x
   x = 5,159,399,902.47/60,644.10
6. Step 6: Final answer
   x = 85,076.70