Finding the Fourth Proportional to 139,933.52, 193,111.32 and 76,274.48

Step by Step Solution

1. Step 1: Write the proportion equation
   139,933.52 : 193,111.32 = 76,274.48 : x
2. Step 2: Convert to fraction form
   139,933.52/193,111.32 = 76,274.48/x
3. Step 3: Cross multiply
   139,933.52x = 193,111.32 × 76,274.48
4. Step 4: Simplify right side
   139,933.52x = 14,729,465,515.11
5. Step 5: Solve for x
   x = 14,729,465,515.11/139,933.52
6. Step 6: Final answer
   x = 105,260.45