Finding the Fourth Proportional to 485,111,569,124.10, 727,667,353,686.12 and 485,111,569,124.10

Step by Step Solution

1. Step 1: Write the proportion equation
   485,111,569,124.10 : 727,667,353,686.12 = 485,111,569,124.10 : x
2. Step 2: Convert to fraction form
   485,111,569,124.10/727,667,353,686.12 = 485,111,569,124.10/x
3. Step 3: Cross multiply
   485,111,569,124.10x = 727,667,353,686.12 × 485,111,569,124.10
4. Step 4: Simplify right side
   485,111,569,124.10x = 352,999,851,747,055,083,978,752
5. Step 5: Solve for x
   x = 352,999,851,747,055,083,978,752/485,111,569,124.10
6. Step 6: Final answer
   x = 727,667,353,686.12