Finding the Fourth Proportional to 139,928.06, 193,100.74 and 76,266.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,928.06 : 193,100.74 = 76,266.02 : x
2. Step 2: Convert to fraction form
   139,928.06/193,100.74 = 76,266.02/x
3. Step 3: Cross multiply
   139,928.06x = 193,100.74 × 76,266.02
4. Step 4: Simplify right side
   139,928.06x = 14,727,025,190.94
5. Step 5: Solve for x
   x = 14,727,025,190.94/139,928.06
6. Step 6: Final answer
   x = 105,247.12