Finding the Fourth Proportional to 139,997.04, 193,196.79 and 76,335.90

Step by Step Solution

1. Step 1: Write the proportion equation
   139,997.04 : 193,196.79 = 76,335.90 : x
2. Step 2: Convert to fraction form
   139,997.04/193,196.79 = 76,335.90/x
3. Step 3: Cross multiply
   139,997.04x = 193,196.79 × 76,335.90
4. Step 4: Simplify right side
   139,997.04x = 14,747,850,841.76
5. Step 5: Solve for x
   x = 14,747,850,841.76/139,997.04
6. Step 6: Final answer
   x = 105,344.02