Finding the Fourth Proportional to 139,932.60, 193,111.20 and 76,274.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,932.60 : 193,111.20 = 76,274.52 : x
2. Step 2: Convert to fraction form
   139,932.60/193,111.20 = 76,274.52/x
3. Step 3: Cross multiply
   139,932.60x = 193,111.20 × 76,274.52
4. Step 4: Simplify right side
   139,932.60x = 14,729,464,086.62
5. Step 5: Solve for x
   x = 14,729,464,086.62/139,932.60
6. Step 6: Final answer
   x = 105,261.13