Finding the Fourth Proportional to 139,928.56, 193,101.42 and 76,266.34

Step by Step Solution

1. Step 1: Write the proportion equation
   139,928.56 : 193,101.42 = 76,266.34 : x
2. Step 2: Convert to fraction form
   139,928.56/193,101.42 = 76,266.34/x
3. Step 3: Cross multiply
   139,928.56x = 193,101.42 × 76,266.34
4. Step 4: Simplify right side
   139,928.56x = 14,727,138,552.20
5. Step 5: Solve for x
   x = 14,727,138,552.20/139,928.56
6. Step 6: Final answer
   x = 105,247.55