Finding the Fourth Proportional to 2,116,965,818.31, 2,921,415,233.18 and 1,177,148,282.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116,965,818.31 : 2,921,415,233.18 = 1,177,148,282.55 : x
2. Step 2: Convert to fraction form
   2,116,965,818.31/2,921,415,233.18 = 1,177,148,282.55/x
3. Step 3: Cross multiply
   2,116,965,818.31x = 2,921,415,233.18 × 1,177,148,282.55
4. Step 4: Simplify right side
   2,116,965,818.31x = 3,438,938,924,353,244,672
5. Step 5: Solve for x
   x = 3,438,938,924,353,244,672/2,116,965,818.31
6. Step 6: Final answer
   x = 1,624,465,966.63