Finding the Fourth Proportional to 2,553,920,939.72, 3,524,409,337.92 and 1,380,499,211.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553,920,939.72 : 3,524,409,337.92 = 1,380,499,211.72 : x
2. Step 2: Convert to fraction form
   2,553,920,939.72/3,524,409,337.92 = 1,380,499,211.72/x
3. Step 3: Cross multiply
   2,553,920,939.72x = 3,524,409,337.92 × 1,380,499,211.72
4. Step 4: Simplify right side
   2,553,920,939.72x = 4,865,444,312,777,166,848
5. Step 5: Solve for x
   x = 4,865,444,312,777,166,848/2,553,920,939.72
6. Step 6: Final answer
   x = 1,905,088,069.53