Finding the Fourth Proportional to 64,672.98, 89,264.46 and 60,955.08

Step by Step Solution

1. Step 1: Write the proportion equation
   64,672.98 : 89,264.46 = 60,955.08 : x
2. Step 2: Convert to fraction form
   64,672.98/89,264.46 = 60,955.08/x
3. Step 3: Cross multiply
   64,672.98x = 89,264.46 × 60,955.08
4. Step 4: Simplify right side
   64,672.98x = 5,441,122,300.46
5. Step 5: Solve for x
   x = 5,441,122,300.46/64,672.98
6. Step 6: Final answer
   x = 84,132.85