Finding the Fourth Proportional to 72,456.30, 101,542.50 and 72,456.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,456.30 : 101,542.50 = 72,456.30 : x
2. Step 2: Convert to fraction form
   72,456.30/101,542.50 = 72,456.30/x
3. Step 3: Cross multiply
   72,456.30x = 101,542.50 × 72,456.30
4. Step 4: Simplify right side
   72,456.30x = 7,357,393,842.75
5. Step 5: Solve for x
   x = 7,357,393,842.75/72,456.30
6. Step 6: Final answer
   x = 101,542.50