Finding the Fourth Proportional to 139,903.56, 193,061.22 and 76,239.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,903.56 : 193,061.22 = 76,239.96 : x
2. Step 2: Convert to fraction form
   139,903.56/193,061.22 = 76,239.96/x
3. Step 3: Cross multiply
   139,903.56x = 193,061.22 × 76,239.96
4. Step 4: Simplify right side
   139,903.56x = 14,718,979,690.35
5. Step 5: Solve for x
   x = 14,718,979,690.35/139,903.56
6. Step 6: Final answer
   x = 105,208.04