Finding the Fourth Proportional to 515,947.37, 773,947.98 and 156,109.10

Step by Step Solution

1. Step 1: Write the proportion equation
   515,947.37 : 773,947.98 = 156,109.10 : x
2. Step 2: Convert to fraction form
   515,947.37/773,947.98 = 156,109.10/x
3. Step 3: Cross multiply
   515,947.37x = 773,947.98 × 156,109.10
4. Step 4: Simplify right side
   515,947.37x = 120,820,318,734.88
5. Step 5: Solve for x
   x = 120,820,318,734.88/515,947.37
6. Step 6: Final answer
   x = 234,171.79