Finding the Fourth Proportional to 1,621,500,513.35, 2,431,621,956.58 and 557,721,091.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621,500,513.35 : 2,431,621,956.58 = 557,721,091.10 : x
2. Step 2: Convert to fraction form
   1,621,500,513.35/2,431,621,956.58 = 557,721,091.10/x
3. Step 3: Cross multiply
   1,621,500,513.35x = 2,431,621,956.58 × 557,721,091.10
4. Step 4: Simplify right side
   1,621,500,513.35x = 1,356,166,850,774,377,984
5. Step 5: Solve for x
   x = 1,356,166,850,774,377,984/1,621,500,513.35
6. Step 6: Final answer
   x = 836,365,353.95