Finding the Fourth Proportional to 1,398,345,061,165.10, 1,929,695,815,301.70 and 781,056,562,974

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398,345,061,165.10 : 1,929,695,815,301.70 = 781,056,562,974 : x
2. Step 2: Convert to fraction form
   1,398,345,061,165.10/1,929,695,815,301.70 = 781,056,562,974/x
3. Step 3: Cross multiply
   1,398,345,061,165.10x = 1,929,695,815,301.70 × 781,056,562,974
4. Step 4: Simplify right side
   1,398,345,061,165.10x = 1,507,201,581,084,856,543,084,544
5. Step 5: Solve for x
   x = 1,507,201,581,084,856,543,084,544/1,398,345,061,165.10
6. Step 6: Final answer
   x = 1,077,846,679,580.69