Finding the Fourth Proportional to 2,139,397,998.52, 2,951,927,129.71 and 1,235,138,263.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,397,998.52 : 2,951,927,129.71 = 1,235,138,263.69 : x
2. Step 2: Convert to fraction form
   2,139,397,998.52/2,951,927,129.71 = 1,235,138,263.69/x
3. Step 3: Cross multiply
   2,139,397,998.52x = 2,951,927,129.71 × 1,235,138,263.69
4. Step 4: Simplify right side
   2,139,397,998.52x = 3,646,038,149,508,478,976
5. Step 5: Solve for x
   x = 3,646,038,149,508,478,976/2,139,397,998.52
6. Step 6: Final answer
   x = 1,704,235,561.61