Finding the Fourth Proportional to 2,172,308,275.42, 2,998,101,308.70 and 1,219,795,942.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172,308,275.42 : 2,998,101,308.70 = 1,219,795,942.30 : x
2. Step 2: Convert to fraction form
   2,172,308,275.42/2,998,101,308.70 = 1,219,795,942.30/x
3. Step 3: Cross multiply
   2,172,308,275.42x = 2,998,101,308.70 × 1,219,795,942.30
4. Step 4: Simplify right side
   2,172,308,275.42x = 3,657,071,810,956,579,328
5. Step 5: Solve for x
   x = 3,657,071,810,956,579,328/2,172,308,275.42
6. Step 6: Final answer
   x = 1,683,495,778.36