Finding the Fourth Proportional to 108,059.78, 148,944.02 and 72,236.72

Step by Step Solution

1. Step 1: Write the proportion equation
   108,059.78 : 148,944.02 = 72,236.72 : x
2. Step 2: Convert to fraction form
   108,059.78/148,944.02 = 72,236.72/x
3. Step 3: Cross multiply
   108,059.78x = 148,944.02 × 72,236.72
4. Step 4: Simplify right side
   108,059.78x = 10,759,227,468.41
5. Step 5: Solve for x
   x = 10,759,227,468.41/108,059.78
6. Step 6: Final answer
   x = 99,567.36