Finding the Fourth Proportional to 139,356,679.92, 192,322,976.04 and 83,604,188.40

Step by Step Solution

1. Step 1: Write the proportion equation
   139,356,679.92 : 192,322,976.04 = 83,604,188.40 : x
2. Step 2: Convert to fraction form
   139,356,679.92/192,322,976.04 = 83,604,188.40/x
3. Step 3: Cross multiply
   139,356,679.92x = 192,322,976.04 × 83,604,188.40
4. Step 4: Simplify right side
   139,356,679.92x = 16,079,006,322,496,846
5. Step 5: Solve for x
   x = 16,079,006,322,496,846/139,356,679.92
6. Step 6: Final answer
   x = 115,380,233.88