Finding the Fourth Proportional to 2,156,227,689.78, 2,975,594,188.86 and 1,166,153,106.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156,227,689.78 : 2,975,594,188.86 = 1,166,153,106.78 : x
2. Step 2: Convert to fraction form
   2,156,227,689.78/2,975,594,188.86 = 1,166,153,106.78/x
3. Step 3: Cross multiply
   2,156,227,689.78x = 2,975,594,188.86 × 1,166,153,106.78
4. Step 4: Simplify right side
   2,156,227,689.78x = 3,469,998,407,855,603,200
5. Step 5: Solve for x
   x = 3,469,998,407,855,603,200/2,156,227,689.78
6. Step 6: Final answer
   x = 1,609,291,274.90