Finding the Fourth Proportional to 72,419.52, 108,133.86 and 64,874.37

Step by Step Solution

1. Step 1: Write the proportion equation
   72,419.52 : 108,133.86 = 64,874.37 : x
2. Step 2: Convert to fraction form
   72,419.52/108,133.86 = 64,874.37/x
3. Step 3: Cross multiply
   72,419.52x = 108,133.86 × 64,874.37
4. Step 4: Simplify right side
   72,419.52x = 7,015,116,043.17
5. Step 5: Solve for x
   x = 7,015,116,043.17/72,419.52
6. Step 6: Final answer
   x = 96,867.75