Finding the Fourth Proportional to 612,077.10, 857,793.69 and 612,077.10

Step by Step Solution

1. Step 1: Write the proportion equation
   612,077.10 : 857,793.69 = 612,077.10 : x
2. Step 2: Convert to fraction form
   612,077.10/857,793.69 = 612,077.10/x
3. Step 3: Cross multiply
   612,077.10x = 857,793.69 × 612,077.10
4. Step 4: Simplify right side
   612,077.10x = 525,035,874,173.50
5. Step 5: Solve for x
   x = 525,035,874,173.50/612,077.10
6. Step 6: Final answer
   x = 857,793.69