Finding the Fourth Proportional to 72,456.80, 101,543.20 and 72,456.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,456.80 : 101,543.20 = 72,456.80 : x
2. Step 2: Convert to fraction form
   72,456.80/101,543.20 = 72,456.80/x
3. Step 3: Cross multiply
   72,456.80x = 101,543.20 × 72,456.80
4. Step 4: Simplify right side
   72,456.80x = 7,357,495,333.76
5. Step 5: Solve for x
   x = 7,357,495,333.76/72,456.80
6. Step 6: Final answer
   x = 101,543.20