Finding the Fourth Proportional to 297,507.57, 410,459.06 and 190,139.55

Step by Step Solution

1. Step 1: Write the proportion equation
   297,507.57 : 410,459.06 = 190,139.55 : x
2. Step 2: Convert to fraction form
   297,507.57/410,459.06 = 190,139.55/x
3. Step 3: Cross multiply
   297,507.57x = 410,459.06 × 190,139.55
4. Step 4: Simplify right side
   297,507.57x = 78,044,500,961.82
5. Step 5: Solve for x
   x = 78,044,500,961.82/297,507.57
6. Step 6: Final answer
   x = 262,327.78