Finding the Fourth Proportional to 771,012.72, 1,156,379.72 and 209,916

Step by Step Solution

1. Step 1: Write the proportion equation
   771,012.72 : 1,156,379.72 = 209,916 : x
2. Step 2: Convert to fraction form
   771,012.72/1,156,379.72 = 209,916/x
3. Step 3: Cross multiply
   771,012.72x = 1,156,379.72 × 209,916
4. Step 4: Simplify right side
   771,012.72x = 242,742,605,303.52
5. Step 5: Solve for x
   x = 242,742,605,303.52/771,012.72
6. Step 6: Final answer
   x = 314,836.06