Finding the Fourth Proportional to 72,429.20, 101,470 and 72,429.20

Step by Step Solution

1. Step 1: Write the proportion equation
   72,429.20 : 101,470 = 72,429.20 : x
2. Step 2: Convert to fraction form
   72,429.20/101,470 = 72,429.20/x
3. Step 3: Cross multiply
   72,429.20x = 101,470 × 72,429.20
4. Step 4: Simplify right side
   72,429.20x = 7,349,390,924
5. Step 5: Solve for x
   x = 7,349,390,924/72,429.20
6. Step 6: Final answer
   x = 101,470