Finding the Fourth Proportional to 31,105,969,016.06, 42,912,557,939.88 and 18,239,041,341.11

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105,969,016.06 : 42,912,557,939.88 = 18,239,041,341.11 : x
2. Step 2: Convert to fraction form
   31,105,969,016.06/42,912,557,939.88 = 18,239,041,341.11/x
3. Step 3: Cross multiply
   31,105,969,016.06x = 42,912,557,939.88 × 18,239,041,341.11
4. Step 4: Simplify right side
   31,105,969,016.06x = 782,683,918,318,378,156,032
5. Step 5: Solve for x
   x = 782,683,918,318,378,156,032/31,105,969,016.06
6. Step 6: Final answer
   x = 25,161,856,167.03