Finding the Fourth Proportional to 105,796.45, 145,994.12 and 58,048.78

Step by Step Solution

1. Step 1: Write the proportion equation
   105,796.45 : 145,994.12 = 58,048.78 : x
2. Step 2: Convert to fraction form
   105,796.45/145,994.12 = 58,048.78/x
3. Step 3: Cross multiply
   105,796.45x = 145,994.12 × 58,048.78
4. Step 4: Simplify right side
   105,796.45x = 8,474,780,553.17
5. Step 5: Solve for x
   x = 8,474,780,553.17/105,796.45
6. Step 6: Final answer
   x = 80,104.58