Finding the Fourth Proportional to 139,739,210.37, 192,840,900.26 and 81,036,729.59

Step by Step Solution

1. Step 1: Write the proportion equation
   139,739,210.37 : 192,840,900.26 = 81,036,729.59 : x
2. Step 2: Convert to fraction form
   139,739,210.37/192,840,900.26 = 81,036,729.59/x
3. Step 3: Cross multiply
   139,739,210.37x = 192,840,900.26 × 81,036,729.59
4. Step 4: Simplify right side
   139,739,210.37x = 15,627,195,886,892,390
5. Step 5: Solve for x
   x = 15,627,195,886,892,390/139,739,210.37
6. Step 6: Final answer
   x = 111,831,144.93