Finding the Fourth Proportional to 82,978.68, 124,455.80 and 30,375.92

Step by Step Solution

1. Step 1: Write the proportion equation
   82,978.68 : 124,455.80 = 30,375.92 : x
2. Step 2: Convert to fraction form
   82,978.68/124,455.80 = 30,375.92/x
3. Step 3: Cross multiply
   82,978.68x = 124,455.80 × 30,375.92
4. Step 4: Simplify right side
   82,978.68x = 3,780,459,424.34
5. Step 5: Solve for x
   x = 3,780,459,424.34/82,978.68
6. Step 6: Final answer
   x = 45,559.41