Finding the Fourth Proportional to 60,233.49, 89,713.98 and 57,072.06

Step by Step Solution

1. Step 1: Write the proportion equation
   60,233.49 : 89,713.98 = 57,072.06 : x
2. Step 2: Convert to fraction form
   60,233.49/89,713.98 = 57,072.06/x
3. Step 3: Cross multiply
   60,233.49x = 89,713.98 × 57,072.06
4. Step 4: Simplify right side
   60,233.49x = 5,120,161,649.40
5. Step 5: Solve for x
   x = 5,120,161,649.40/60,233.49
6. Step 6: Final answer
   x = 85,005.23