Finding the Fourth Proportional to 72,178.88, 108,277.12 and 30,611.84

Step by Step Solution

1. Step 1: Write the proportion equation
   72,178.88 : 108,277.12 = 30,611.84 : x
2. Step 2: Convert to fraction form
   72,178.88/108,277.12 = 30,611.84/x
3. Step 3: Cross multiply
   72,178.88x = 108,277.12 × 30,611.84
4. Step 4: Simplify right side
   72,178.88x = 3,314,561,873.10
5. Step 5: Solve for x
   x = 3,314,561,873.10/72,178.88
6. Step 6: Final answer
   x = 45,921.49