Finding the Fourth Proportional to 76,343.50, 105,341.88 and 49,522.78

Step by Step Solution

1. Step 1: Write the proportion equation
   76,343.50 : 105,341.88 = 49,522.78 : x
2. Step 2: Convert to fraction form
   76,343.50/105,341.88 = 49,522.78/x
3. Step 3: Cross multiply
   76,343.50x = 105,341.88 × 49,522.78
4. Step 4: Simplify right side
   76,343.50x = 5,216,822,748.03
5. Step 5: Solve for x
   x = 5,216,822,748.03/76,343.50
6. Step 6: Final answer
   x = 68,333.55