Finding the Fourth Proportional to 72,669.30, 101,970.30 and 72,669.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,669.30 : 101,970.30 = 72,669.30 : x
2. Step 2: Convert to fraction form
   72,669.30/101,970.30 = 72,669.30/x
3. Step 3: Cross multiply
   72,669.30x = 101,970.30 × 72,669.30
4. Step 4: Simplify right side
   72,669.30x = 7,410,110,321.79
5. Step 5: Solve for x
   x = 7,410,110,321.79/72,669.30
6. Step 6: Final answer
   x = 101,970.30