Finding the Fourth Proportional to 139,307,510.01, 192,232,936.77 and 82,012,109.49

Step by Step Solution

1. Step 1: Write the proportion equation
   139,307,510.01 : 192,232,936.77 = 82,012,109.49 : x
2. Step 2: Convert to fraction form
   139,307,510.01/192,232,936.77 = 82,012,109.49/x
3. Step 3: Cross multiply
   139,307,510.01x = 192,232,936.77 × 82,012,109.49
4. Step 4: Simplify right side
   139,307,510.01x = 15,765,428,657,347,834
5. Step 5: Solve for x
   x = 15,765,428,657,347,834/139,307,510.01
6. Step 6: Final answer
   x = 113,169,983.84