Finding the Fourth Proportional to 215,577.34, 297,499.83 and 123,711.60

Step by Step Solution

1. Step 1: Write the proportion equation
   215,577.34 : 297,499.83 = 123,711.60 : x
2. Step 2: Convert to fraction form
   215,577.34/297,499.83 = 123,711.60/x
3. Step 3: Cross multiply
   215,577.34x = 297,499.83 × 123,711.60
4. Step 4: Simplify right side
   215,577.34x = 36,804,179,969.03
5. Step 5: Solve for x
   x = 36,804,179,969.03/215,577.34
6. Step 6: Final answer
   x = 170,723.79