Finding the Fourth Proportional to 761,873,928.72, 1,143,002,876.18 and 216,615,462.72

Step by Step Solution

1. Step 1: Write the proportion equation
   761,873,928.72 : 1,143,002,876.18 = 216,615,462.72 : x
2. Step 2: Convert to fraction form
   761,873,928.72/1,143,002,876.18 = 216,615,462.72/x
3. Step 3: Cross multiply
   761,873,928.72x = 1,143,002,876.18 × 216,615,462.72
4. Step 4: Simplify right side
   761,873,928.72x = 247,592,096,912,938,464
5. Step 5: Solve for x
   x = 247,592,096,912,938,464/761,873,928.72
6. Step 6: Final answer
   x = 324,977,778.58