Finding the Fourth Proportional to 72,707.30, 102,023.50 and 72,707.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,707.30 : 102,023.50 = 72,707.30 : x
2. Step 2: Convert to fraction form
   72,707.30/102,023.50 = 72,707.30/x
3. Step 3: Cross multiply
   72,707.30x = 102,023.50 × 72,707.30
4. Step 4: Simplify right side
   72,707.30x = 7,417,853,221.55
5. Step 5: Solve for x
   x = 7,417,853,221.55/72,707.30
6. Step 6: Final answer
   x = 102,023.50