Finding the Fourth Proportional to 85,846,309,255.94, 128,788,669,288.20 and 26,159,642,844.71

Step by Step Solution

1. Step 1: Write the proportion equation
   85,846,309,255.94 : 128,788,669,288.20 = 26,159,642,844.71 : x
2. Step 2: Convert to fraction form
   85,846,309,255.94/128,788,669,288.20 = 26,159,642,844.71/x
3. Step 3: Cross multiply
   85,846,309,255.94x = 128,788,669,288.20 × 26,159,642,844.71
4. Step 4: Simplify right side
   85,846,309,255.94x = 3,369,065,591,024,139,632,640
5. Step 5: Solve for x
   x = 3,369,065,591,024,139,632,640/85,846,309,255.94
6. Step 6: Final answer
   x = 39,245,316,662.13