Finding the Fourth Proportional to 72,425.52, 108,142.80 and 64,880.37

Step by Step Solution

1. Step 1: Write the proportion equation
   72,425.52 : 108,142.80 = 64,880.37 : x
2. Step 2: Convert to fraction form
   72,425.52/108,142.80 = 64,880.37/x
3. Step 3: Cross multiply
   72,425.52x = 108,142.80 × 64,880.37
4. Step 4: Simplify right side
   72,425.52x = 7,016,344,876.84
5. Step 5: Solve for x
   x = 7,016,344,876.84/72,425.52
6. Step 6: Final answer
   x = 96,876.69