Finding the Fourth Proportional to 139,418,056.65, 192,395,854.78 and 76,692,804.42

Step by Step Solution

1. Step 1: Write the proportion equation
   139,418,056.65 : 192,395,854.78 = 76,692,804.42 : x
2. Step 2: Convert to fraction form
   139,418,056.65/192,395,854.78 = 76,692,804.42/x
3. Step 3: Cross multiply
   139,418,056.65x = 192,395,854.78 × 76,692,804.42
4. Step 4: Simplify right side
   139,418,056.65x = 14,755,377,661,861,262
5. Step 5: Solve for x
   x = 14,755,377,661,861,262/139,418,056.65
6. Step 6: Final answer
   x = 105,835,485.13