Finding the Fourth Proportional to 139,724.89, 192,820.35 and 76,063.15

Step by Step Solution

1. Step 1: Write the proportion equation
   139,724.89 : 192,820.35 = 76,063.15 : x
2. Step 2: Convert to fraction form
   139,724.89/192,820.35 = 76,063.15/x
3. Step 3: Cross multiply
   139,724.89x = 192,820.35 × 76,063.15
4. Step 4: Simplify right side
   139,724.89x = 14,666,523,205.10
5. Step 5: Solve for x
   x = 14,666,523,205.10/139,724.89
6. Step 6: Final answer
   x = 104,967.15